Asme Y14.41-2019

ASME Y14.
41-2019
(Revision of ASME Y14.41-2012)
Digital Product
Definition Data
Practices
Engineering Product Definition and
Related Documentation Practices
A N I N T E R N AT I O N A L STA N DA R D
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ASME Y14.41
ADOPTION NOTICE
ASME Y14.41, Digital Product Definition Data Practices, was adopted on 7 July 2003 for use by
the Department of Defense (DoD). Proposed changes by DoD activities must be submitted to the
DoD Adopting Activity: Commander, U.S. Army (ARDEC), ATTN: RDAR-QES-E, Picatinny
Arsenal, NJ 07806-5000. Copies of this document may be purchased from The American Society
of Mechanical Engineers (ASME), 150 Clove Road, 6th Floor, Little Falls, NJ 07424-2139;
http://www.asme.org.
Custodians: Adopting Activity:

Army — AR Army — AR
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Air Force — 16
Review Activities:
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Air Force — 13, 99
OSD — SE
NGA — MP
NSA — NS
Civil agency:
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DLA — DH, IS
NOTE: The activities listed above were interested in this document as of the date of this document.
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ASMC N\A FSC DRPR
DISTRIBUTION STATEMENT A. Approved for public release, distribution is unlimited.

ASME Y14.41-2019
(Revision of ASME Y14.41-2012)
Digital Product
Definition Data
Practices
Engineering Product Definition and
Related Documentation Practices
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AN INTERNATIONAL STANDARD
x
Date of Issuance: September 6, 2019
The next edition of this Standard is scheduled for publication in 2024.
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CONTENTS
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Correspondence With the Y14 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Section 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Structure of Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 ASME Y14 Series Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 Reference to This Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Section 2 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Cited Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Section 3 Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Section 4 Data Set Identification and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Related Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.3 Data Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 5 Data Set Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 General Annotated Model Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 General Method Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 Management Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.4 Security Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.5 Views on Annotated Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Section 6 Model Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Section 7 Annotated Model and Drawing Graphic Sheet Requirements . . . . . . . . . . . . . . . . . . 14
7.1 Common Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2 Annotated Model Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.3 Drawing Graphic Sheet Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Section 8 Notes and Special Notations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Section 9 Model Values and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Section 10 Plus and Minus Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
iii
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Section 11 Datum Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Section 12 Geometric Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Section 13 Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Section 14 Surface Texture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Nonmandatory Appendices
A Compliance Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
B Classification Codes for Drawings and Data Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Figures
4-1 Contents of a Product Definition Data Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5-1 Left-Hand and Right-Hand Coordinate Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7-1 Display Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7-2 Annotation and Model Geometry Relationship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7-3 Tolerance Query Associativity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7-4 Simplified Feature Representation and Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7-5 Annotation Planes Relative to Annotated Model Geometry . . . . . . . . . . . . . . . . . . . . . . . 23
7-6 Graphic Display of Associated Annotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7-7 Listing of Digital Element Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7-8 Queries for Datum Feature Symbols and Datum Target Symbols . . . . . . . . . . . . . . . . . . . 25
7-9 Queries for Datum Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7-10 Queries for Coordinates and Supplemental Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7-11 Annotated Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7-12 Model and Drawing Graphic Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7-13 Query for Nonuniform Tolerance Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9-1 Placement and Attachment of Basic Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9-2 Placement and Attachment of Size Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
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10-1 Attachment Techniques: Fillets, Rounds, and Chamfers . . . . . . . . . . . . . . . . . . . . . . . . . 39

10-2 Attachment Techniques: Reliefs and Step Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
10-3 Attachment Techniques: Countersinks and Oblique Surfaces . . . . . . . . . . . . . . . . . . . . . . 41
iv
10-4 Attachment Techniques: Depth, Spotface, Remaining Thickness . . . . . . . . . . . . . . . . . . . 42
10-5 Attachment Techniques: Notches, Flats, and Pin Heights . . . . . . . . . . . . . . . . . . . . . . . . 43
11-1 Datum System and Coordinates Relationship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
11-2 Datum Feature Symbol Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
11-3 Partial Surface as a Datum Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11-4 Datum Targets and Symbols Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
11-5 Equalizing Target Points Establish a Datum Axis on an Internal Cylindrical Surface . . . . . 52
11-6 Two Cylindrical Features Establish a Datum Axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
11-7 Pattern of Features Establish a Datum Axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11-8 Two Coaxial Features Establish a Datum Axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11-9 Coplanar Surfaces Establish a Datum Plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
11-10 Separated Surfaces Establish a Datum Plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
11-11 Datum Targets and Symbols in an Axonometric View . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12-1 General Application of Geometric Tolerances — Coincident or Perpendicular Annotation Plane 63
12-2 Circularity — Sphere, Conical, or Revolved Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
12-3 Cylindricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
12-4 Straightness — Directed by Line Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
12-5 Straightness — Directed by Ordinate Axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
12-6 Straightness — Cylindrical or Conical Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
12-7 Straightness — Median Line and Flatness: Median Plane . . . . . . . . . . . . . . . . . . . . . . . . 69
12-8 Orientation — Planar Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
12-9 Each Element Orientation — Directed by Line Element . . . . . . . . . . . . . . . . . . . . . . . . . 72
12-10 Each Element Orientation — Directed by Ordinate Axis . . . . . . . . . . . . . . . . . . . . . . . . . 73
12-11 Orientation — Inclined Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
12-12 Orientation — Cylinder or a Set of Opposed, Parallel Surfaces . . . . . . . . . . . . . . . . . . . . 75
12-13 Orientation of an Axis With a Parallel Planes Tolerance Zone . . . . . . . . . . . . . . . . . . . . . 76
12-14 Profile — Planar, Conical, or Revolved Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12-15 Profile — Multiple or Coplanar Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
12-16 Profile — Between Basis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12-17 Profile — All-Around Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
12-18 Line Profile — Directed by Line Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12-19 Line Profile — Directed by Ordinate Axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
12-20 Nonuniform Profile Tolerance Zones — Use of Supplemental Geometry . . . . . . . . . . . . . 85
12-21 Position — Individual Patterns of Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
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12-22 Position — Projected Tolerance Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
12-23 Position — Extremities of Long Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
12-24 Position — Elongated Holes (Slots) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
12-25 Bidirectional Position — Polar or Rectangular . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
12-26 Position — Combined With Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
12-27 Runout — Attachments and Associativity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
12-28 Runout — Perpendicular and Cylindrical Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
12-29 Runout — Spherical, Conical, and Revolved Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
12-30 Axonometric Views — Feature Control Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
12-31 Axonometric Views — Limited Area Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
12-32 Axonometric Views — Straightness, Each Element Applications . . . . . . . . . . . . . . . . . . . 98
v
12-33 Axonometric Views — Parallel Planes Tolerance Zone . . . . . . . . . . . . . . . . . . . . . . . . . . 99
12-34 Axonometric Views — Multiple Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
12-35 Axonometric Views — Between Basis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
13-1 Placement of a Welding Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
13-2 Extent of a Weld Using the Between Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
13-3 Indication of Location of Fillet Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
13-4 Indication of Location of Spot Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
13-5 Query of a Weld Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
14-1 Surface Texture Attached With a Leader to a Surface . . . . . . . . . . . . . . . . . . . . . . . . . . 105
14-2 Surface Texture Attached to a Feature Control Frame . . . . . . . . . . . . . . . . . . . . . . . . . . 106
14-3 Surface Texture Attached to a Dimension for a Feature of Size . . . . . . . . . . . . . . . . . . . . 107
14-4 Surface Texture Attached to a Dimension for a Width . . . . . . . . . . . . . . . . . . . . . . . . . . 108
14-5 Direction of Lay by Ordinate Axes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
14-6 Direction of Lay With Supplemental Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Tables
9-1 Resolved Dimension Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10-1 Plus and Minus Tolerance Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
12-1 Form Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
12-2 Orientation Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12-3 Profile Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
12-4 Location Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
12-5 Runout Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
A-1 Compliance Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
vi
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FOREWORD
The development of this Standard was initiated at the request of industry and the government. A meeting was held to
determine the interest in this subject in January 1997 in Wichita, Kansas, hosted by The Boeing Company in their facility. A
subsequent meeting was held during the spring ASME meeting in 1997 to enlist membership of those who would be
interested in working on this project.
The Chairs of the different Y14 standards continue to collaborate to improve the coordination of the Y14 standards. To
this end, in this revision of ASME Y14.41 material regarding surface finish and weld symbols applied to the model has been
added. The definitions for classification codes for data sets were developed within Y14.41 to describe the combinations of
annotated model and drawing graphic sheets that might be required by a customer. These were given to ASME Y14.100-
2013 and placed in Nonmandatory Appendix F. Seeing that most of these classification codes contain a model/annotated
model, Nonmandatory Appendix F was duplicated and placed here as Nonmandatory Appendix B. At a later date, the
classification codes that appear in ASME Y14.100-2017, Appendix F, will be removed and reference to Y14.41.
A clarification of the terms “model” and “annotated model” was added. An example of a nonuniform tolerance zone is
shown and explained. This revision also provides guidance to limit the use of applying GD&T through notes suggesting
that the use of annotation will allow for automated tools to consume those design requirements.
Nonmandatory Appendix A, Table A-1 was added which contains information whether the requirements defined in
this Standard can be accomplished completely by the data preparer or capabilities need to be provided by the software
to meet the requirements. These additions allow the reader to find all of the requirements and information within the
Standard.
It is essential that this Standard be used in close conjunction with ASME Y14.24, ASME Y14.34, ASME Y14.35, and ASME
Y14.100. Although the primary purpose of ASME Y14 series standards is to establish requirements for the preparation
and revision of product definition data, this Standard also includes various software-dependent requirements that may
not be achievable without computer software tools that have been developed in support of facilitating these require-
ments. Examples of such requirements include associativity, stationary and rotating annotation planes, display manage-
ment, attributes available on demand, annotation and annotation plane orientation, query, highlighting, and resolved
dimension preservation and association. See Nonmandatory Appendix A for details.
This Standard is available for public review on a continuing basis. This provides an opportunity for additional public
review input from industry, academia, regulatory agencies, and the public-at-large.
This edition was approved as an American National Standard on March 22, 2019.
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vii
ASME Y14 COMMITTEE
Engineering Product Definition and Related Documentation
Practices
(The following is the roster of the Committee at the time of approval of this Standard.)
STANDARDS COMMITTEE OFFICERS

W. A. Kaba, Chair
J. I. Miles, Vice Chair
F. Constantino, Secretary
STANDARDS COMMITTEE PERSONNEL

A. R. Anderson, Spirit AeroSystems, Inc. E. F. McCarthy, Raytheon Missile Systems
F. Bakos, Jr., Consultant P. J. McCuistion, Multimac
J. V. Burleigh, Unaffiliated J. D. Meadows, James D. Meadows & Associates, Inc.
F. Constantino, The American Society of Mechanical Engineers M. E. Meloro, Northrop Grumman Corp.
R. M. Courson, SAE International J. I. Miles, Technical Consultants, Inc.
D. E. Day, Tec-Ease, Inc. M. A. Murphy, General Motors Co.
K. Dobert, Siemens PLM Software H. W. Oakes, USAF (SAIC)
D. H. Honsinger, Consultant M. J. Stahl, Caterpillar, Inc.
J. B. Hoskins, The Boeing Co. B. A. Wilson, Consultant
R. C. Jensen, Hexagon Manufacturing Intelligence E. Zwettler, Rolls-Royce Corp.
W. A. Kaba, Spirit AeroSystems, Inc. K. E. Wiegandt, Contributing Member, Consultant
A. Krulikowski, Effective Training, Inc.
SUBCOMMITTEE 41 — DIGITAL PROJECT DEFINITION DATA PRACTICES

J. I. Miles, Chair, Technical Consultants, Inc. G. R. Mussell, CNH America, LLC
J. B. Hoskins, Vice Chair, The Boeing Co. R. Nascimento, ITI — International Techgroup
J. V. Burleigh, Unaffiliated D. Newman, Rockwell Collins
W. S. Cockrell, Raytheon Missile Systems H. W. Oakes, USAF (SAIC)
B. A. Davis, Ford Motor Co. T. T. Taylor, Siemens Energy, Inc.
G. T. Follett, Raytheon Co. M. D. Toye, GE Aviation
K. Fry, Lockheed Martin Space J. C. Weers, Unaffiliated
A. S. Hall, Rolls-Royce Corp. N. J. Weister, Eaton Corp.
S. Hauger, John Deere R. A. Wheeler, RW-Opt Design, LLC
T. D. Hedberg, NIST R. D. Whittenburg, MBD 360, LLC
L. R. Maggiano, Mitutoyo America Corp. A. Wight, The Boeing Co.
T. J. Miler, Ford Motor Co.
Y14/SC 41 SUPPORT GROUP

N. Bonhomme, Videotron R. C. Hearn, The Boeing Co.
N. Crawford, Crawford Dimensional Management P. J. Huang, Navy Mantech
B. R. Fischer, Advanced Dimensional Management, LLC H. D. Taylor, GE Aviation
S. W. Graham, General Electric J. Van Horn, The Boeing Co.
viii
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CORRESPONDENCE WITH THE Y14 COMMITTEE
General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned
interests. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing
revisions or a case, and attending Committee meetings. Correspondence should be addressed to:
Secretary, Y14 Standards Committee

The American Society of Mechanical Engineers
Two Park Avenue
New York, NY 10016-5990
http://go.asme.org/Inquiry
Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary
or desirable, as demonstrated by the experience gained from the application of the Standard. Approved revisions will be
published periodically.
The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible,
citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal,
including any pertinent documentation.
Proposing a Case. Cases may be issued to provide alternative rules when justified, to permit early implementation of
an approved revision when the need is urgent, or to provide rules not covered by existing provisions. Cases are effective
immediately upon ASME approval and shall be posted on the ASME Committee web page.
Requests for Cases shall provide a Statement of Need and Background Information. The request should identify the
Standard and the paragraph, figure, or table number(s), and be written as a Question and Reply in the same format as
existing Cases. Requests for Cases should also indicate the applicable edition(s) of the Standard to which the proposed
Case applies.
Attending Committee Meetings. The Y14 Standards Committee regularly holds meetings and/or telephone confer-
ences that are open to the public. Persons wishing to attend any meeting and/or telephone conference should contact the
Secretary of the Y14 Standards Committee. Future Committee meeting dates and locations can be found on the Committee
Page at http://go.asme.org/Y14committee.
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INTENTIONALLY LEFT BLANK
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x
ASME Y14.41-2019
Section 1
General
1.1 SCOPE (f) The word “or” used in conjunction with a require-
ment or a recommended practice indicates that there are
This Standard establishes requirements and references two or more options for complying with the stated
documents applicable to the preparation and revision of requirement or practice.
digital product definition data, hereafter referred to as (g) The phrase “unless otherwise specified” or UOS
data sets. This Standard defines exceptions and additional shall be used to indicate a default requirement. The
requirements to existing ASME standards for using digital phrase is used when the default is a generally applied
product definition data set(s) or drawing graphic sheet(s) requirement and an exception may be provided by
in digital format, hereafter referred to as drawing graphic another document or requirement.
sheet(s). When no exception or additional requirements
are stated, existing ASME standards shall apply. It is essen- 1.3.2 Cross-Reference of Standards
tial that this Standard be used in close conjunction with
ASME Y14.24, ASME Y14.34, ASME Y14.35, and ASME Cross-reference of standards in text with or without a
Y14.100. date following the standard designator shall be inter-
preted as follows:
1.2 STRUCTURE OF STANDARD (a) Reference to other ASME Y14 standards in the text
without a date following the standard designator indicates
This Standard supports two methods of preparing a that the issue of the standard identified in the References
data set: annotated model, and an annotated model section (Section 2) shall be used to meet the requirement.
with a drawing graphic sheet. See paras. 5.2.1 and (b) Reference to other ASME Y14 standards in the text
5.2.2. The structure starts with the requirements with a date following the standard designator indicates
common to both methods, and then branches to the that only that issue of the standard shall be used to
other sections that have differing requirements for meet the requirement.
each method. In addition, it provides a guide for the
many Computer-Aided Design (CAD) software packages 1.3.3 Invocation of Referenced Standards
to develop better modeling and annotation practices
The following examples define the invocation of a stan-
for CAD and engineering disciplines.
dard when specified in the References section (Section 2)
and referenced in the text of this Standard:
1.3 ASME Y14 SERIES CONVENTIONS (a) When a referenced standard is cited in the text with
The conventions in paras. 1.3.1 through 1.3.9 are used in no limitations to a specific subject or paragraph(s) of the
this and other ASME Y14 standards. standard, the entire standard is invoked. For example,
“Dimensioning and tolerancing shall be in accordance
1.3.1 Mandatory, Recommended, Guidance, and with ASME Y14.5” is invoking the complete standard
Optional Words because the subject of the standard is dimensioning
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and tolerancing and no specific subject or paragraph(s)

(a) The word “shall” establishes a requirement. within the standard are invoked.
(b) The word “will” establishes a declaration of (b) When a referenced standard is cited in the text with
purpose on the part of the design activity. limitations to a specific subject or paragraph(s) of the
(c) The word “should” establishes a recommended standard, only the paragraph(s) on that subject is
practice. invoked. For example, “Assign part or identifying
(d) The word “may” establishes an allowed practice. numbers in accordance with ASME Y14.100” is invoking
(e) The words “typical,” “example,” “for reference,” or only the paragraph(s) on part or identifying numbers
the Latin abbreviation “e.g.” indicate suggestions given for because the subject of the standard is engineering
guidance only. drawing practices and part or identifying numbers is a
specific subject within the standard.
1
ASME Y14.41-2019
(c) When a referenced standard is cited in the text listing is not a reason to assume inapplicability. Some
without an invoking statement such as “in accordance figures are illustrations of models in a three-dimensional
with,” the standard is invoked for guidance only. For environment. The absence of dimensioning and toleran-
example, “For gaging principles, see ASME Y14.43” is cing annotations in a view may indicate that the product
only for guidance and no portion of the standard is definition is defined in 3D. Dimensions that locate or
invoked. orient and are not shown are considered basic and
shall be queried to determine the intended requirement.
1.3.4 Parentheses Following a Definition When the letter “h” is used in figures for letter heights or
When a definition is followed by a standard referenced for symbol proportions, select the applicable letter height
in parentheses, the standard referenced in parentheses is in accordance with ASME Y14.2. Multiview drawings
the source for the definition. contained within figures are third angle projection.
1.3.5 Notes 1.3.9 Precedence of Standards
Notes depicted in this Standard in ALL UPPERCASE The following are ASME Y14 Standards that are basic
letters are intended to reflect actual drawing entries. engineering drawing standards:
Notes depicted in initial uppercase or lowercase letters ASME Y14.1, Decimal Inch Drawing Sheet Size and Format
are to be considered supporting data to the contents of ASME Y14.1M, Metric Drawing Sheet Size and Format
this Standard and are not intended for literal entry on ASME Y14.2, Line Conventions and Lettering
drawings. A statement requiring the addition of a note ASME Y14.3, Orthographic and Pictorial Views
with the qualifier “such as” is a requirement to add a ASME Y14.5, Dimensioning and Tolerancing
note, and the content of the note is allowed to vary to ASME Y14.24, Types and Applications of Engineering
suit the application. Drawings
ASME Y14.34, Associated Lists
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1.3.6 Acronyms and Abbreviations

ASME Y14.35, Revision of Engineering Drawings and
Acronyms and abbreviations are spelled out the first Associated Documents
time used in this Standard, followed by the acronym or ASME Y14.36, Surface Texture Symbols
abbreviation in parentheses. The acronym is used there- ASME Y14.38, Abbreviations and Acronyms for Use on
after throughout the text. Drawings and Related Documents
ASME Y14.41, Digital Product Definition Data Practices
1.3.7 Units ASME Y14.100, Engineering Drawing Practices
The International System of Units (SI) is featured in this All other ASME Y14 standards are considered specialty
Standard. It should be understood that U.S. Customary types of standards and contain additional requirements
units could equally have been used without prejudice or make exceptions to the basic standards as required
to the principles established. to support a process or type of drawing.
1.3.8 Figures
1.4 REFERENCE TO THIS STANDARD
The figures in this Standard are intended only as illus-
trations to aid the user in understanding the practices When data sets are based on this Standard, this fact shall
described in the text. In some cases, figures show a be noted in the data set or in a document referenced by the
level of detail as needed for emphasis. In other cases, data set. References to this Standard shall state ASME
figures are incomplete by intent so as to illustrate a Y14.41-2019.
concept or facet thereof. The absence of figure(s) has
no bearing on the applicability of the stated requirements 1.5 SYMBOLS
or practice. To comply with the requirements of this Stan- The use of symbols to indicate dimensional require-
dard, actual data sets shall meet the content requirements ments does not preclude the use of equivalent terms
set forth in the text. To assist the user of this Standard, a or abbreviations in accordance with ASME Y14.38
listing of the paragraph(s) that refer to an illustration when symbology is considered inappropriate.
appears in the lower right-hand corner of each figure.
This listing may not be all inclusive. The absence of a
2
ASME Y14.41-2019
Section 2
References
2.1 INTRODUCTION ASME Y14.34-2013, Associated Lists

ASME Y14.35-2014, Revision of Engineering Drawings
The following revisions of American National Standards and Associated Documents
form a part of this Standard to the extent specified herein. ASME Y14.38-2007, Abbreviations and Acronyms for Use
A more recent revision may be used provided there is no on Drawings and Related Documents
conflict with the text of this Standard. In the event of a ASME Y14.100-2017, Engineering Drawing Practices
conflict between the text of this Standard and the refer- Publisher: The American Society of Mechanical Engineers
ences cited herein, the text of this Standard shall take (ASME), Two Park Avenue, New York, NY 10016-5990
precedence. (www.asme.org)
2.2 CITED STANDARDS IEEE/ASTM SI 10-2016, American National Standard for

Use of the International System of Units (SI): The
ASME Y14.1-2012, Decimal Inch Drawing Sheet Size and Modern Metric System1
Format Publisher: Institute of Electrical and Electronics Engi-
ASME Y14.1M-2012, Metric Drawing Sheet Size and neers, Inc. (IEEE), 445 Hoes Lane, Piscataway, NJ
Format 08854 (www.ieee.org)
ASME Y14.2-2014, Line Conventions and Lettering
ASME Y14.3-2012, Orthographic and Pictorial Views AWS A2.4, Standard Symbols for Welding, Brazing, and
ASME Y14.5-2018, Dimensioning and Tolerancing Nondestructive Examination
ASME Y14.24-2012, Types and Applications of Engi- Publisher: American Welding Society (AWS), 8669 NW 36
neering Drawings Street, #130, Miami, FL 33166 (www.aws.org)
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1
IEEE/ASTM standards are also available from the American Society
for Testing and Materials (ASTM International), 100 Barr Harbor Drive,
P.O. Box C700, West Conshohocken, PA 19428-2959 (www.astm.org).
3
ASME Y14.41-2019
Section 3
Terms and Definitions
The following terms are defined as their use applies in 3.10 DATA
this Standard.
data: information represented in a formal manner suitable
for communication, interpretation, or processing by
3.1 ANNOTATED MODEL human beings or computers.
annotated model: a combination of model, annotation, and
attributes that describe a product. 3.11 DATUM SYSTEM
datum system: a partial or complete datum reference
3.2 ANNOTATION frame.
annotation: visible dimensions, tolerances, notes, text, or
symbols. 3.12 DERIVATIVE
derivative: data duplicated or extracted from the original.
3.3 ANNOTATION PLANE A copy of a derivative is also a derivative (ASME Y14.100).
annotation plane: a conceptual plane containing annota-
tion. 3.13 DESIGN ACTIVITY
design activity: an organization that has, or has had,
3.4 ASSEMBLY MODEL responsibility for the design of an item (ASME Y14.100).
assembly model: an annotated model in which the product
described is an assembly of two or more items. 3.14 DESIGN ACTIVITY IDENTIFICATION (DAI)
Design Activity Identification (DAI): the application of a
3.5 ASSOCIATED ENTITY unique identifier that distinguishes an activity or organ-
associated entity: the portion of the product definition data ization from another activity or organization. Examples of
to which annotation or attribute(s) pertain. activity identification include activity name, activity name
and address, or CAGE Code (ASME Y14.100).
3.6 ASSOCIATED GROUP
associated group: a user-defined set of related digital 3.15 DIGITAL ELEMENT
elements. digital element: geometric element, feature, group of
features, annotation, associated group, or attribute that
3.7 ASSOCIATIVITY exists in a data set.
associativity: the established relationship between digital
elements. 3.16 DIGITAL ELEMENT IDENTIFIER
digital element identifier: a label or name used to specify a
3.8 ATTRIBUTE unique digital element.
attribute: a dimension, tolerance, note, text, or symbol
required to complete the product definition or feature 3.17 DIRECTION-DEPENDENT TOLERANCE
of the product that is not visible, but available upon inter- direction-dependent tolerance: a tolerance that invokes a
rogation of the annotated model. zone of parallel lines or curves.
3.9 COORDINATE SYSTEM 3.18 DRAWING GRAPHIC SHEET

coordinate system: a representation of a system to deter- drawing graphic sheet: the two-dimensional (2D)
mine the position of geometric elements in space, e.g., geometric elements and annotations that define an
Cartesian coordinate system. item and the product definition elements of the sheet
4
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ASME Y14.41-2019
format in accordance with ASME Y14.1 or ASME Y14.1M 3.29 PRECISION

(ASME Y14.100).
precision: indicates the number of significant digits of the
product definition required in the production of the part to
3.19 FEATURE fulfill the design intent.
feature: a physical portion of a part (such as a surface, pin
outside diameter, hole, or slot) or its representation on 3.30 PRODUCT DEFINITION DATA
drawings, models, or digital data files (ASME Y14.5).
product definition data: denotes the totality of product
definition elements required to completely define a
3.20 GEOMETRIC ELEMENT product. Product definition data includes geometry,
geometric element: a discrete entity (e.g., point, line, curve, topology, relationships, tolerances, attributes, and
plane, surface, solid, volume, vector, coordinate system) features necessary to completely define a component
used in a digital data set to represent or present physical part or an assembly of parts for the purpose of design,
features of the product definition. analysis, manufacture, test, and inspection (ASME
Y14.100).
3.21 HARD COPY
hard copy: a printed or plotted copy of a displayed image 3.31 PRODUCT DEFINITION DATA SET
on a medium such as paper or polyester film. product definition data set: a collection of one or more data
file(s) that discloses, directly or by reference, by means of
3.22 INSTALLATION MODEL presentation (e.g., graphic or textual), representation (e.g.,
semantics or machine readable), or combinations of both,
installation model: an annotated model in which the
the physical or functional requirements of an item.
product described is an installation, showing parts or
assemblies and a partial or complete representation of
the installation site. 3.32 PRODUCT DEFINITION ELEMENTS
product definition elements: a unit of data for which the
3.23 ITEM definition, identification, representation, and permissible
values are specified (ASME Y14.100).
item: a nonspecific term used to denote any unit or product
including materials, parts, assemblies, equipment, acces-
sories, and computer software (ASME Y14.100). 3.33 QUERY
query: a means of interrogating a digital element or the
3.24 MANAGEMENT DATA relationship between digital elements.
management data: the data required for the release,
control, and storage of product definition data as well 3.34 REPRESENTED LINE ELEMENT
as other relevant engineering data. represented line element: a supplemental geometry line or
curve segment indicating the orientation of a direction
3.25 MODEL dependent tolerance.
model: the portion of the data set that contains model
3.35 RESOLVED DIMENSION
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geometry and supplemental geometry.
resolved dimension: a model value that is rounded off to the
3.26 MODEL GEOMETRY number of decimal places required for the design.
model geometry: geometric elements used to represent the
definition of an item. 3.36 SAVED VIEW
saved view: a stored and retrievable specific orientation
3.27 MODEL VALUE and a magnification factor of an annotated model (ASME
Y14.3).
model value: the numerical value derived by interrogating
the model that quantifies the form and spatial relation-
ships of the geometry composing a model, or assembly 3.37 SPECIAL CHARACTER
of models, to the precision of the computer system. special character: entries such as dash (-), slash (/), and
asterisk (*) that are not included in the set of capital letters
3.28 ORIGINAL A-Z, lowercase letters a-z, numerals 0-9, and punctuation
symbols (ASME Y14.100).
original: the current design activity’s reproducible
drawing or data set on which the revision record is
kept and recognized as official (ASME Y14.100).
5
ASME Y14.41-2019
3.38 SUPPLEMENTAL GEOMETRY 3.39.5 IEEE

supplemental geometry: geometric elements included in IEEE stands for the Institute of Electrical and Electro-
product definition data to communicate design require- nics Engineers.
ments but not intended to represent an item.
3.39.6 PIN
3.39 ACRONYMS PIN stands for Part or Identifying Number.
The following is a list of acronyms used in this Standard:
3.39.7 SI
3.39.1 ASME SI stands for the International System of Units.
ASME stands for The American Society of Mechanical
Engineers. 3.40 ABBREVIATIONS
3.39.2 CAD The following is a list of abbreviations used in this Stan-
dard:
CAD stands for Computer-Aided Design.
3.40.1 2D
3.39.3 CAGE
2D stands for two-dimensional.
CAGE stands for Commercial and Government Entity.
3.40.2 3D
3.39.4 GD&T
3D stands for three-dimensional.
GD&T stands for geometric dimensioning and toleran-
cing. 3.40.3 deg
deg stands for degree.
6
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ASME Y14.41-2019
Section 4
Data Set Identification and Control
This Section establishes requirements for a data set 4.1.4 Part or Identifying Number
identification system.
The PIN shall be assigned in accordance with ASME
Y14.100.
4.1 GENERAL
The current revision of the data and the computer appli- 4.2 RELATED DATA
cation(s) and version(s) used to develop the data set shall
be specified with other management data. See Related data shall be integral to or referenced in the data
subsection 5.3. set. Related data consists of, but is not limited to the
following: analytical data, associated lists, test require-
4.1.1 Data Set Identifier ments, material specifications, and process and finish re-
quirements in accordance with Figure 4-1.
The identification of the data set, the annotated model,
the drawing graphic sheet, the associated lists when used, 4.3 DATA MANAGEMENT
and the Part or Identifying Number (PIN) for the item
being defined may be identical. See Figure 4-1. The Paragraphs 4.3.1 through 4.3.4 describe the structure
data set identifier shall be unique and consist of and control requirements for data management.
numeric, alpha, or special characters in any combination.
Spaces are not permitted between any of the characters of 4.3.1 Management System
the data set identifier. A data management system shall provide control and
(a) Data Set Identifier Length. The length of the data set tracking information of the data sets. This system may
identifier may be a direct function of the computer system include work in process, data-review status, annotated-
and the operating system. When the PIN is used as the data model-checked status, release status, design tool and
set identifier, the length shall be compatible with recog- version, libraries.
nized limitations on PIN number length in accordance
with ASME Y14.100. 4.3.2 Approval
(b) Special Characters. Special characters shall be
selected in a manner that does not hinder data set iden- The data set shall be approved in accordance with ASME
tification or have an adverse effect on the computer Y14.100.
system operation such as dash (-), slash (/), or asterisk
4.3.3 Storage and Retention
(*).
(c) Identifier Prefixes and Suffixes. A recognizable prefix Data sets shall be controlled and available throughout
or suffix may be included as part of the identifier to the life cycle of a product.
associate files and sets of related data.
4.3.4 Revision History
4.1.2 Drawing Graphic Sheet Identification
The following requirements apply to revision history:
Drawing graphic sheet identification shall be assigned (a) Revision history shall be prepared in accordance
in accordance with ASME Y14.100. with ASME Y14.35.
(b) Revision history shall be recorded in the data set.
4.1.3 Associated List Identification
Associated list identification shall be assigned in accor-
dance with ASME Y14.34.
7
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ASME Y14.41-2019
Figure 4-1 Contents of a Product Definition Data Set

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8
ASME Y14.41-2019
Section 5
Data Set Requirements
This Section establishes the requirements for a data set. (3) Line profile. See para. 12.2.3(e) and Figure 12-18.
The data set shall provide complete product definition; for (b) Associativity. The represented line element, the
example, a model, its annotation, attributes, and feature control frame, and the controlled feature shall
supporting documentation. be associated. See Figures 12-4, 12-9, and 12-18.
(c) Centerlines and Centerplanes. Display of centerlines
5.1 GENERAL ANNOTATED MODEL or centerplanes for features of size are optional.
REQUIREMENTS (d) Direction of Movement for Movable Datum Targets.
Represented line elements are used to indicate the direc-
Paragraphs 5.1.1 through 5.1.7 describe general re- tion of movement for movable datum targets. See
quirements for an annotated model. para. 11.2.3(b) and Figure 11-4, illustration (b) or
para. 11.3(d) and Figure 11-11, illustration (b).
5.1.1 Model Requirement (e) Datum Target Areas or Locations. The areas for
A model is required and shall be in accordance with datum targets may be indicated using supplemental
Section 6. geometry. The “X” for point targets may also be indicated
using supplemental geometry. See Figure 11-4, illustra-
5.1.2 Associativity tion (b).
(f) Nonuniform Tolerance Zones. Nonuniform tolerance
Associativity shall be available, maintainable, and elec-
zone boundaries for profile, as defined in ASME Y14.5,
tronically accessible.
shall be modeled using supplemental geometry. See
5.1.3 Coordinate Systems para. 12.2.3.1 and Figure 12-20.
An annotated model shall contain one or more coordi- 5.1.5 Part Features Not Fully Modeled
nate systems. A coordinate system shall be depicted by
A simplified representation of part features such as
three mutually perpendicular line segments with its
threads, holes, fillets, rounds, and drafts may be shown
origin located at the intersection of the three axes.
using partial geometry definition, annotations, attributes,
Each axis shall be labeled with an uppercase letter indi-
or a combination thereof. See Figure 7-4 and para. 6.1.2.
cating the positive direction. Coordinate systems shall be
right-handed unless otherwise specified. See Figure 5-1. 5.1.6 Assembly Model Completeness
5.1.4 Applications of Supplemental Geometry Assembly model completeness shall be in accordance
with para. 6.1.2, except part and subassembly models
When supplemental geometry is used, there shall be a
shown in the assembly model need only show sufficient
clear distinction between the supplemental geometry and
detail to ensure correct identification, orientation, and
the model geometry. The following is a list of requirements
placement. The assembly model may be shown in an
for the use of supplemental geometry.
exploded, partially assembled, or completely assembled
(a) Represented Line Element. The following geometric
state. Location and orientation of parts and subassemblies
tolerances may use a represented line element to clarify
may be shown by geometric definition, annotation, attri-
the directionality of a two-dimensional tolerance zone of
butes, or a combination thereof.
parallel lines. When a represented line element is used to
indicate the direction of a geometric tolerance application, 5.1.7 Installation Model Completeness
the leader from the feature control frame shall terminate
on the represented line element in an arrowhead. See Installation completeness shall be in accordance with
Figure 12-4. paras. 6.1.2 and 5.1.6 except part, assembly, and installa-
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(1) Straightness applied to the line elements of a tion models shown in the installation model need only
planar surface. See Table 12-1 and Figure 12-4. show sufficient detail to provide installation and space
(2) Orientation tolerance applied on an Each requirements. The maximum envelope for part, assembly,
Element basis. See para. 12.2.2(a) and Figure 12-9. and installation may be shown using supplemental
9
ASME Y14.41-2019
Figure 5-1 Left-Hand and Right-Hand Coordinate Systems
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10
ASME Y14.41-2019
geometry, annotation, or a combination of both. Location annotated model, on the drawing graphic sheet, or a
and orientation of part, assembly, and installation may be combination of both.
shown by geometric definition, annotation, attributes, or a NOTE: The development of a drawing graphic sheet that provides
combination thereof. a complete product definition is allowed.
(b) Product definition data created or shown in the
5.2 GENERAL METHOD REQUIREMENTS annotated model and subsequently shown on the
Paragraphs 5.2.1 and 5.2.2 cover the product-definition drawing graphic sheet shall be in agreement.
methods. Each different method for specifying product (c) Product definition data created and shown on the
definition is used in support of different industry drawing graphic sheet shall not conflict with product defi-
processes and requirements. The data set is the original nition data in the annotated model.
for all of the methods, and any hard-copy output is a deri- (d) The drawing graphic sheet shall contain a border
vative. and title block information in accordance with ASME Y14.1
or ASME Y14.1M.
5.2.1 Annotated Model Without a Drawing Graphic (e) The drawing graphic sheet or associated list shall
Sheet Method reference all applicable annotated models or models and
data for the product specified.
The annotated model without a drawing graphic sheet
(f) Minimum drawing graphic sheet hard copy output
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method provides the same product design requirements
capability shall be in accordance with ASME Y14.1 or
as a drawing graphic sheet that contains complete product
ASME Y14.1M, ASME Y14.2, and ASME Y14.3.
definition. All Y14 standards apply to an annotated model,
(g) Annotation displayed on the drawing graphic sheet
unless exceptions or additions are identified. The
shall be interpretable without the use of query.
following subparagraphs describe requirements when
(h) When complete product definition is not contained
an annotated model is used without a drawing graphic
on the drawing graphic sheet, it shall be noted.
sheet.
(i) When complete product definition is not contained
(a) Product definition data, including but not limited to
in the annotated model, it shall be noted.
notes, associated lists, marking requirements, dimen-
(j) Dimensions, tolerances, datum specifications, and
sions, and tolerances shall be contained or referenced
notes on drawing graphic sheets may be shown in true
in the data set.
profile views and refer to visible outlines, or appear in
(b) The following product definition elements of a
axonometric views.
drawing graphic sheet format as defined in ASME
(k) The use of color is acceptable on drawing graphic
Y14.1 or ASME Y14.1M are required and shall be contained
sheets prepared by digital data files.
in the data set:
(1) Design Activity Identification, e.g., Commercial
and Government Entity (CAGE) Code
5.3 MANAGEMENT DATA
(2) data set title Management data that is not placed on a drawing
(3) data set identifier graphic sheet shall be placed in the annotated model
(4) approval indicators and approval dates or in the data set.
(5) contract number when required
(6) originator’s name and date 5.3.1 Management Data in the Data Set
(c) When working with an annotated model, the first or
The following management data shall be contained in
third angle projection symbol in accordance with ASME
the data set or in the annotated model as applicable:
Y14.3 is not required.
(a) application data
(b) approval
5.2.2 Annotated Model With a Drawing Graphic
(c) data set identification
Sheet Method
(d) design activity transfer
Subparagraphs (a) through (k) describe requirements (e) revision history for the data set
when complete product definition is contained in the (f) ASME Y14.41 Note
annotated model and drawing graphic sheet. (g) CAD Maintained Notation
(a) A complete definition of a product shall contain an (h) Design Activity Identification
annotated model and a drawing graphic sheet that may (i) Duplicate Original Notation
contain orthographic views, axonometric views, or a (j) item identification
combination thereof. Annotation may be applied to the (k) SI/U.S. Customary Notation
(l) navigation data
(m) scale
11
ASME Y14.41-2019
5.3.2 Management Data in an Annotated Model (c) have the applicable security markings constantly
displayed for all mediums of viewing
Management data in an annotated model shall be
included as annotation, attributes, or both. The manage- 5.4.3 Company Security Marking
ment data shall not rotate when presented as annotation.
Annotated models containing company intellectual
5.4 SECURITY MARKINGS property may include notes to this effect. These
include, but are not limited to, the following:
Security markings shall be placed in the file(s) or in the (a) company proprietary notes
referenced document(s) to which it applies. The following (b) competition sensitive information
requirements pertain to annotated models. (c) copyright notices
The display and control shall be in accordance with
5.4.1 Location of Security Marking on Annotated company policy.
Models
5.4.4 Government Notices, Statements, and
Security marking in an annotated model shall be
included as annotation, attributes, or both. The security Legends
marking shall not rotate when presented as annotation. Annotated models may require government notices,
Reproductions and derivatives of technical data, or any statements, and legends. Contractual requirements deter-
portions thereof, subject to asserted restrictions, shall mine which are applicable. These include, but are not
also reproduce the asserted restrictions. limited to
(a) distribution statements
5.4.2 Government, Department of Defense, and (b) export control notices
Other Federal Agencies Security Marking (c) rights in data legends
Annotated models containing classified information, (d) copyright and trademark markings
e.g., secret, confidential, etc., shall
(a) contain the applicable security markings 5.5 VIEWS ON ANNOTATED MODELS
(b) be controlled in accordance with the applicable See ASME Y14.3 for sections and views.
security level
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ASME Y14.41-2019
Section 6
Model Requirements
This Section establishes the requirements for a model. (b) Units. The units of measure (SI or U.S. Customary) at
which the model is created shall be specified within the
6.1 GENERAL data set.
(c) Precision. The precision for interpreting data from a
Models represent ideal geometric constructs; that is, model shall be at least one significant digit higher than the
perfect dimensionality and shape aspect of the part maximum number of significant digits used in the annota-
geometry are assumed. Parts shall be modeled at a speci- tions and attributes in the data set. The number of signif-
fied dimensional condition(s); for example, minimum, icant digits required for the product definition shall not
maximum, or mean. The dimensional condition(s) shall exceed the precision capabilities of the CAD application.
be specified in one or more notes or in a referenced docu-
ment. 6.1.2 Model Completeness
6.1.1 Geometric Scale, Units, and Precision The model shall contain the complete geometric defini-
tion of the part.
The following are the requirements concerning the (a) Models not fully modeled shall be identified as such
scale, units, and precision of a model: (e.g., partially modeled symmetrical part).
(a) Scale. Unless otherwise specified, models shall be (b) Features that are not fully modeled shall be iden-
created at a scale of 1:1. When the model is not created at tified as such (e.g., threaded holes that are only shown as
1:1 scale, the scale shall be indicated in the Management holes).
Data. See para. 5.3.1.
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ASME Y14.41-2019
Section 7
Annotated Model and Drawing Graphic Sheet Requirements
This Section establishes the requirements for the appli- 7.2 ANNOTATED MODEL REQUIREMENTS
cation, display management, and query of product defini-
tion data in annotated models and drawing graphic sheets. Paragraphs 7.2.1 through 7.2.6 describe requirements
Specific requirements for particular types of product defi- for annotation applied to a model. These are general re-
nition data are described in Sections 8 through 14. quirements that apply to all types of annotation. Specific
requirements for particular types of annotation are
addressed in Sections 8 through 14. See Figure 7-2 for
7.1 COMMON REQUIREMENTS
a diagram showing the relationship between annotation
Paragraphs 7.1.1 through 7.1.4 describe requirements and model geometry.
common to annotated models and drawing graphic sheets.
7.2.1 Associativity
7.1.1 Display Management The following are general requirements for defining an
Display management shall include the ability to enable associative relationship between digital elements.
or disable the display of all annotation, annotation by type, (a) Selection of Associated Entities. Annotation may be
or selected annotation, except as noted in subsection 5.4. associated to a feature, a group of features, or a portion of
See Figure 7-1. an applicable feature. For an example of the associated
features for a dimension, see Figure 7-3.
7.1.2 Hard Copy (b) Associated Groups. Annotation, model geometry,
and supplemental geometry may be placed into associated
A hard copy of any given visual display shall be available
groups to indicate their relationships. For example:
on demand. When a hard copy is intended to be used as a
(1) supplemental geometry used to define location,
drawing graphic sheet, it shall meet applicable drawing
orientation, or further clarify the application of annotation
graphic sheet standards.
in an annotated model
7.1.3 Leader Lines (2) a coordinate system for datum symbols and
datum targets
The following subparagraphs describe common re- (3) other annotation. This could include qualifying
quirements for leader lines. notes and size limit callouts
(a) Leader lines directed to represented line elements (c) Associativity Agreement. The associated entities,
shall terminate with an arrowhead. See Figure 12-18. annotation, and attributes shall be in agreement with
(b) When an indicated element is a surface, the leader each other.
shall terminate with a dot within the bounds of the surface. (d) Continuous Feature. When features are designated
Leader lines may terminate on the rim or edge of a feature as CONTINUOUS FEATURE or the continuous feature
of size when doing so provides a clearer understanding of symbol is used, the appropriate features should be desig-
the intention of the annotation. Leader lines on a rim or nated as the associated objects for the accompanying
edge shall terminate with an arrowhead. See Figure 7-2. Geometric Dimensioning and Tolerancing (GD&T). Exten-
sion lines between the features shall not be used on anno-
7.1.4 Attributes tated models.
Attributes are used to capture additional information
that is not shown using geometry or shown as annotation 7.2.2 Annotation Planes
on the annotated model. Attributes shall be available on The following describe the requirements for annotation
demand. Attributes may be presented using text descrip- planes and their use.
tion, forms, or other techniques. See Figure 7-4 for an (a) Annotation in Annotation Planes. All annotation
example of how the attributes of a hole could be repre- shall be specified in one or more annotation planes.
sented. Applications of attributes include, but are not (b) Annotation Plane Orientation. The orientation and
limited to, coatings, knurling, threaded holes, and pins. normal vector of the annotation plane shall be maintained
relative to the geometry as the annotated model is
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ASME Y14.41-2019
manipulated in three-dimensional (3D) space. See 7.2.4 Direction-Dependent Tolerances

Figure 7-5 and (c). When CAD software does not
support maintenance of annotation plane orientation rel- When a direction-dependent tolerance (e.g., straight-
ative to the geometry, the annotated model method shall ness) is applied to an annotated model, the direction
not be used. shall be explicitly defined as described in either (a) or
(c) Annotation Reading Direction. To ensure the anno- (b) as follows:
tation is being interpreted as intended (for example, the (a) Supplemental geometry is added to the model
text could be upside down or backwards following rota- geometry to define the direction of application. The
tion of the annotated model), one of the following tech- model geometry to which the tolerance applies shall
niques shall be used: be defined as the associated geometry for the annotation.
(1) ensure the reading direction is updated after See Figures 12-4, 12-9, and 12-18, and para. 5.1.4(a).
rotation of an annotated model. (b) A coordinate system vector is used to define the
(2) include a means of determining the correct direction of application. The coordinate system vector,
reading direction in each annotation plane applied to associated feature, and tolerance shall be organized as
an annotated model. an associated group. See Figures 12-5, 12-10, and 12-19.
(3) when using saved views, ensure the annotated
7.2.5 Indicating Limited Application of a Tolerance
model is orientated in the intended view direction. For
example, this may be accomplished by including a Limited length, area, and location indicators may
means of determining the correct reading direction in consist of, but are not limited to, supplemental geometry
the view. and associative annotation. When supplemental geometry
(d) Use of True Profiles. When tolerancing features, is used, it shall be located on the model geometry. See
alignment of the annotation plane to the true profile is Figures 11-3 and 12-16.
not required.
(e) Annotation Legibility. Legibility requirements of 7.2.6 Query
ASME Y14.2 shall apply when the annotation is viewed The ability to query the annotated model shall be avail-
perpendicular to the annotation plane. able. A notation stating the requirement for query of the
(f) Overlapping Annotation in an Annotation Plane. annotated model or associated data shall be added to the
Annotation in any given annotation plane shall not drawing graphic sheet or in the general notes. The anno-
overlap other annotation in the same annotation plane tated model shall contain information needed to enable
when the annotated model is viewed in the intended the following types of queries. The software shall be
view direction. able to support all of these requirements individually
(g) Annotation Over the Model. Annotation within any and in any combination. See Nonmandatory Appendix
given annotation plane may be placed over the model A for more information.
when the annotated model is viewed perpendicular to (a) Obtaining Model Values. Model values shall be
the annotation plane as long as the annotation is readable. obtainable from the annotated model.
(h) Annotation Inside the Geometry of the Model. Anno- (b) Annotation To/From Model Geometry. The ability to
tation within any given annotation plane may be placed traverse the relationship between model geometry and
inside the geometry of the model as long as the annotation annotation, in either order, shall be available within
is readable. the annotated model. This includes
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(1) Graphic Display of Associated Entities. The asso-

7.2.3 Leader and Extension Lines
ciated entities for a piece of annotation shall be high-
Requirements for leader and extension lines in anno- lighted, or otherwise distinguished from other entities
tated models are described as follows: on the display, on demand. See Figure 7-3 and Figure
(a) Extension Lines. Visible gaps between extension 11-10, illustrations (b) through (f).
(projection) lines and geometry are not required on anno- (2) Graphic Display of Associated Annotation. All
tated models. annotations associated with selected geometry or features
(b) Leader Lines shall be highlighted, or otherwise distinguished from
(1) A solid leader line shall be used to indicate all other entities, on demand. See Figure 7-6 and Figure
datum targets in an annotated model. 12-3, illustration (c).
(2) Leader lines shall be directed to an associated (c) Digital Element Identifiers. Digital element identi-
entity. See para. 7.2.1(c). fiers shall be obtainable from the annotated model. See
Figure 7-7.
(d) Model Geometry and Features
(1) Features shall be identifiable by selecting a
geometric element of the feature.
15
ASME Y14.41-2019
(2) All geometric elements in an associated group wise distinguished from other entities on the display. See
shall be identifiable by selecting any geometric Figure 7-13, illustration (b).
element within the group. (2) Upon selection of a feature controlled by a nonu-
(3) All features in an associated group shall be iden- niform profile tolerance, the nonuniform tolerance zone
tifiable by selecting one of the features. and the nonuniform profile feature control frame shall be
(e) Feature Control Frames, Datum Feature Symbols, highlighted or otherwise distinguished from other entities
and Datum Targets on the display. See Figure 7-13, illustration (c).
(1) Upon selection of a feature control frame, the (h) Associated Groups. Upon selection of one of the
datum feature symbols and datum target symbols that digital elements in an associated group, the members
correspond to the datum references shall be highlighted of the associated group shall be highlighted or otherwise
or otherwise distinguished from other entities on the distinguished from other entities on the display.
display. See Figure 7-8. (i) Attribute. Upon interrogation of any specific feature
(2) Upon selection of a feature control frame, the or aspect of the annotated model, the attribute data shall
portion of the corresponding coordinate system repre- be provided. See para 7.1.4.
senting the partial or complete datum reference frame
referenced in the feature control frame shall be high- 7.3 DRAWING GRAPHIC SHEET REQUIREMENTS
lighted or otherwise distinguished from other entities
on the display. See Figure 7-10, illustration (a). See ASME Y14.3 for sections and views. Specific require-
(3) Upon selection of a nonuniform profile feature ments for particular types of annotation are addressed in
control frame, the associated nonuniform tolerance Sections 8 through 14. The relationship between an anno-
zone and the associated toleranced feature(s) shall be tated model and a drawing graphic sheet is illustrated in
highlighted or otherwise distinguished from other entities Figures 7-11 and 7-12. Figure 7-11 shows an annotated
on the display. See Figure 7-13, illustration (a). model where all of the annotation is displayed on the
(4) Upon selection of a datum target symbol or a model at the same time, or in one Saved View. Figure
datum feature symbol, other datum target symbols and 7-12 shows the same model geometry with no annotation
datum feature symbols that have the same datum displayed and all of the annotation has been placed in
letter shall be highlighted or otherwise distinguished orthographic views on a drawing graphic sheet. Either
from other entities on the display. See Figure 7-9. method may be used.
(f) Annotation and Supplemental Geometry. Upon selec-
7.3.1 Annotation in Axonometric Views
tion of annotation, the supplemental geometry used in the
definition of the annotation shall be highlighted or other- (a) The orientation of the annotation shall be parallel
wise distinguished from other entities on the display. See to, normal to, or coincident with the surface to which it
Figure 7-10, illustration (b). applies.
(g) Nonuniform Tolerance Zone (b) Annotation shall not overlap other annotation.
(1) Upon selection of a nonuniform tolerance zone, (c) Annotation shall not overlap the part.
the associated toleranced feature(s) and the nonuniform
profile feature control frame shall be highlighted or other-
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16
ASME Y14.41-2019
Figure 7-1 Display Management
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17
ASME Y14.41-2019
Figure 7-1 Display Management (Cont’d)

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18
ASME Y14.41-2019
Figure 7-2 Annotation and Model Geometry Relationship
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19
ASME Y14.41-2019
Figure 7-3 Tolerance Query Associativity
20
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ASME Y14.41-2019
Figure 7-3 Tolerance Query Associativity (Cont’d)

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21
ASME Y14.41-2019
Figure 7-4 Simplified Feature Representation and Attributes
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22
ASME Y14.41-2019
Figure 7-5 Annotation Planes Relative to Annotated Model Geometry
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23
ASME Y14.41-2019
Figure 7-6 Graphic Display of Associated Annotation
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24
ASME Y14.41-2019
Figure 7-7 Listing of Digital Element Identifiers
Figure 7-8 Queries for Datum Feature Symbols and Datum Target Symbols
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25
ASME Y14.41-2019
Figure 7-9 Queries for Datum Targets
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26
ASME Y14.41-2019
Figure 7-10 Queries for Coordinates and Supplemental Geometry
27
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ASME Y14.41-2019
Figure 7-11 Annotated Model
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28
ASME Y14.41-2019
Figure 7-12 Model and Drawing Graphic Sheet
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29
ASME Y14.41-2019
Figure 7-13 Query for Nonuniform Tolerance Zones
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30
ASME Y14.41-2019
Section 8
Notes and Special Notations
This Section establishes requirements for the applica- (3) an associated list
tion of notes and special notations used with an annotated (b) The flag note symbol shall be shown adjacent, asso-
model, a drawing graphic sheet, or a combination of both. ciated, and rotate with the applicable digital elements in
the annotated model.
8.1 COMMON REQUIREMENTS (c) When a flag note is placed in accordance with (a)(1)
or (a)(2), the flag note shall be associated with the appli-
There are no common requirements for notes and cable digital elements.
special notations. (d) When a flag note is placed in accordance with (a)(3),
associativity may be used.
8.2 ANNOTATED MODEL REQUIREMENTS
Paragraphs 8.2.1 through 8.2.5 describe requirements 8.2.5 Special Notations
for annotated models. When special notations, as defined in ASME Y14.100,
are placed in an annotated model, the following shall
8.2.1 Notes Area Annotation Plane apply:
When general notes, flag notes, and special notations (a) When the special notations are applicable to the
are placed in an annotated model, the notes shall be entire annotated model, the special-notations symbol
placed as annotation in a single annotation plane or a and the associated text shall be placed on the notes
similar method. These notes shall not rotate. area annotation plane in accordance with para. 8.2.1.
(b) When the special notations are applicable only to a
8.2.2 General Notes portion of an annotated model, the special-notations
symbol and its associated text shall be placed on the
General notes do not require associativity. General notes area annotation plane in accordance with
notes may include default tolerance(s) for the entire anno- para. 8.2.1. The special-notations symbol shall be
tated model. See subsection 12.1 for using general notes shown adjacent to the applicable digital elements in
for geometric tolerances. the annotated model. The special-notations symbol
shall be associated to the digital elements to which it
8.2.3 Local Notes
applies.
Local notes shall be associated to the applicable digital
elements in the annotated model. 8.3 DRAWING GRAPHIC SHEET REQUIREMENTS
8.2.4 Flag Notes Paragraph 8.3.1 describes requirements for drawing
graphic sheets.
When a flag note is used in an annotated model, the
following shall apply: 8.3.1 Local Notes in Axonometric Views
(a) The flag note, in accordance with ASME Y14.100,
shall be placed as one or a combination of the following: Local notes shall have a leader line(s) that clearly indi-
(1) annotation in the notes area annotation plane cates the feature(s) that is related to the note. For leader
(2) an attribute line terminators, see para. 7.1.3.
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31
ASME Y14.41-2019
Section 9
Model Values and Dimensions
This Section establishes the requirements for model (a) To obtain a resolved dimension, a model value shall
value query, and resolved, basic, size, and limit dimensions be rounded to the number of decimal places required for
in a data set. Direct tolerancing methods applicable to the design.
dimensions, as defined in ASME Y14.5, should only be (b) All resolved dimensions shall be absolute values in
used to define the size of a feature. See para. 9.2.2 and accordance with ASME Y14.5.
Section 10. Geometric tolerancing is the preferred (c) Rounding shall be in accordance with IEEE/ASTM SI
method. This Section also contains the common require- 10.
ments for associativity and dimensions in an annotated (d) Resolved Dimension Preservation and Association. A
model or drawing graphic sheet. Linear, radial, and direct and permanent association to the originating model
angular dimensions are addressed in Section 10. value shall be established and maintained for every
resolved dimension.
9.1 COMMON REQUIREMENTS (e) Utilization of Model Values or Resolved Dimensions.
The use of model values or resolved dimensions for
All model values and resolved dimensions shall be analyses and other processes shall be defined in appro-
obtained from the model. The following subparagraphs priate documentation.
address requirements for model values and resolved
dimensions. Model values are obtained for one of the
9.2 ANNOTATED MODEL REQUIREMENTS
following purposes:
(a) to determine the location and orientation of Requirements for attaching and displaying basic and
surfaces size dimensions in an annotated model are defined in
(b) to determine the distance or angle between two the following paragraphs. Linear, radial, and angular
surfaces dimensions are addressed in Section 10. Dimensions
(c) to determine the position (basic location and orien- and tolerances may be shown to internal features
tation) of features of size without the use of a section. See Figure 10-4, illustration
(d) to determine the feature relation (the basic hole-to- (c).
hole spacing and orientation) dimensions within a pattern
of features of size 9.2.1 Queried Model Values
(e) to determine the contour of surface geometry Queried model values of feature(s) shall be interpreted
(f) to determine the size value for a feature of size or as basic unless otherwise dimensionally specified in the
features of size within a pattern data set. A model value shall be rounded to the number of
Model value queries (a) through (d) shall always be decimal places required for the design. Queried model
conducted in relation to the absolute or a user-defined values of feature(s) that are controlled elsewhere shall
coordinate system of the design model. For queries (e) be considered reference.
and (f), direct interrogation of the model surface or
feature of size may be conducted without regard to coor- 9.2.2 Basic Dimensions
dinate system.
The following requirements apply to basic dimensions
9.1.1 Resolved Dimensions in an annotated model.
(a) Basic Dimensions. Querying of the model for the
Dimensions displayed in an annotated model or a profile, location, and orientation of a feature shall
drawing graphic sheet are resolved dimensions. Resolved occur within the appropriate coordinate system. See
dimensions derived from model values are considered the subsection 9.1 and para. 11.2.1(a).
same as dimensions specified per ASME Y14.5. For exam- (b) Displaying Basic Dimensions. The display of basic
ples of resolving model values to displayed dimensions, dimensions may be necessary in defining some annotated
see Table 9-1. The requirements for resolved dimensions model relationships. Displayed basic dimensions shall be
follow. enclosed in a box in accordance with ASME Y14.5.
32
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ASME Y14.41-2019
(c) Placement. Basic dimensions should be placed in (b) Placement and Attachment. The placement and
annotation planes that are parallel with one of the attachment methods for size dimensions are as follows:
planes of the absolute or a user-defined coordinate (1) Spherical Surface. The size dimension and leader
system. An example of an exception is the 3X 6.35 shall be placed on an annotation plane containing the
basic dimension shown in Figure 9-1. feature centerpoint.
(d) Attachment to Surface Features. Basic dimensions (2) Cylindrical Surface. The size dimension and
defining surface curvature or extent, such as fillets, leader shall be placed on an annotation plane perpendi-
rounds, or chamfers, shall be directed to the feature cular to the feature axis or containing the feature axis.
surface by a leader. See Figure 9-1. (3) Set of Two Opposed, Parallel Surfaces (a Width).
(e) Attachment With Dimension and Extension Lines. The size dimension, dimension line, and extension lines
Basic dimensions defining linear distance or angular rela- shall be placed on an annotation plane perpendicular to or
tion shall be shown using dimension and extension lines. containing the feature centerplane. The extension lines
See Figure 9-1. shall clearly indicate the surfaces comprising the
(f) Implied Angle. There are no 90 deg implied angles in width. See Figure 9-2 for examples.
a model. All angular values shall be queried from the model (c) Use of the Term TRUE. The term TRUE, when used
unless a dimension is displayed. The coordinate system(s) with a dimension, shall not be used on annotated models.
and planes associated with a datum reference frame(s)
and orthographic views are 90 deg. 9.3 DRAWING GRAPHIC SHEET REQUIREMENTS
9.2.3 Size Dimensions Basic dimensions not displayed on a drawing graphic
sheet shall be obtained by querying of the model.
A displayed feature of size dimension shall always
include a tolerance. 9.3.1 Presentation of Dimensions in Axonometric
(a) Size Dimension and Annotated Model Agreement. A Views
size dimension shall agree with the queried model value
for the same feature when the model value is rounded to Requirements for dimensions on axonometric views of
the same number of decimal places. This agreement shall a drawing graphic sheet are defined in the following
meet one of the following requirements, depending on the subparagraphs.
tolerance expression used. (a) Displayed Dimensions. Dimensions shown in an
(1) Bilateral or Unilateral Tolerance. The displayed axonometric view shall be true, and the use of the
size dimension shall equal the resolved model value. term TRUE is not required.
(2) Limit Dimensions. The resolved model value shall (b) Displayed Basic Dimensions. Basic dimensions shall
equal one of the limit dimensions, or a value within the be enclosed in a box in accordance with ASME Y14.5.
displayed range of limits. (c) Dimension Leader Lines. Leader lines shall be used to
(3) Dimensions With Plus/Plus or Minus/Minus Toler- relate a dimension to a cylindrical feature. The leader line
ances. The resolved model value shall not be within the shall be directed to the intersection of the cylindrical
displayed range of limits. feature and a surface. Leader lines shall terminate with
an arrowhead.
33
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 9-1 Placement and Attachment of Basic Dimensions
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
34
ASME Y14.41-2019
Figure 9-2 Placement and Attachment of Size Dimensions
35
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Table 9-1 Resolved Dimension Examples
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
36
ASME Y14.41-2019
Section 10
Plus and Minus Tolerances
This Section establishes the placement, attachment, and 10.2.1 Chamfers

display requirements for plus and minus tolerances in a
data set. Attachment for 90 deg surface intersections with an
equally disposed chamfer is indicated in Table 10-1.
Oblique surface intersections, unequally disposed
10.1 COMMON REQUIREMENTS
extents, or chamfers defined using a linear and angular
One or more general notes defining plus and minus dimension require the use of dimension and extension
tolerances may be specified. lines. See Figure 10-1, illustrations (c) and (d). The
value shall be located and oriented in a manner that is
10.2 ANNOTATED MODEL REQUIREMENTS clear.
Table 10-1 lists general applications for plus and minus 10.2.2 Depth Specification
tolerance of linear, radial, and angular dimensions. The
attachment method generally used is shown. When a feature depth is governed by a remaining thick-
ness tolerance, the feature tolerance and the remaining
NOTE: The features listed in Table 10-1 do not comprise an
thickness requirement should be an associated group.
exhaustive list, and define requirements that are applicable
to similar and other valid applications. The omission of a parti-
See Table 10-1 and Figure 10-4, illustration (c).
cular application is not cause to consider the application invalid.
10.3 DRAWING GRAPHIC SHEET REQUIREMENTS
Use existing drawing standards for plus and minus
tolerances. See subsection 1.1.
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
37
ASME Y14.41-2019
Table 10-1 Plus and Minus Tolerance Applications

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-
38
ASME Y14.41-2019
Figure 10-1 Attachment Techniques: Fillets, Rounds, and Chamfers
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
39
ASME Y14.41-2019
Figure 10-2 Attachment Techniques: Reliefs and Step Surfaces

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
40
ASME Y14.41-2019
Figure 10-3 Attachment Techniques: Countersinks and Oblique Surfaces

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
41
ASME Y14.41-2019
Figure 10-4 Attachment Techniques: Depth, Spotface, Remaining Thickness
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
42
ASME Y14.41-2019
Figure 10-5 Attachment Techniques: Notches, Flats, and Pin Heights
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
43
ASME Y14.41-2019
Section 11
Datum Applications
This Section establishes practices for organizing, (1) When used, a customized datum reference frame
attaching, and displaying datum feature symbols, in accordance with ASME Y14.5 shall be labeled.
datum targets, and related information associated with (2) When a datum reference frame is not a custo-
annotated models. Requirements and recommendations mized datum referenced frame, labeling is optional.
for correlating datum features to the coordinate axes of See Figure 11-1, illustrations (a), (b), and (c).
the annotated model space are given.
11.2.2 Identification of Datum Features
11.1 COMMON REQUIREMENTS The following subparagraphs describe requirements
There are no exceptions or additions to existing stan- for identification of datum features and attachment or
dards that are common for datum applications. See placement of datum feature symbols on annotated models.
subsection 1.1. (a) Identification of Datum Features. Figure 11-2
demonstrates symbol attachment methods for identifying
11.2 ANNOTATED MODEL REQUIREMENTS the datum features. The datum feature symbol should be
attached to the surface representing the datum feature.
Paragraphs 11.2.1 through 11.2.4 describe require- Single extension lines of feature outlines should not be
ments applicable to annotated models. used for attachment of datum feature symbols. Particular
requirements and the preferred methods governing each
11.2.1 Datum Reference Frames and Coordinate of the four fundamental datum feature types are given in
Systems the following subparagraphs.
The following requirements apply to the relationship (1) Identification of a Planar Surface Datum Feature.
between the datum reference frames on the annotated The datum feature symbol is placed on an annotation
model and the coordinate systems. plane perpendicular to the surface. See datum A in
(a) Datum Reference Frame and Coordinate System Figure 11-2, illustration (a).
Correspondence. Each datum reference frame shall be (2) Identification of a Spherical Surface Datum
associated to a corresponding coordinate system. Feature. The datum feature symbol is attached as
(b) Datum Reference Frame and Coordinate System shown to the size limits imposed upon the feature. See
Associativity. A definite visual association between any datum F in Figure 11-2, illustration (a).
datum reference frame and the corresponding coordinate (3) Identification of a Cylindrical Surface Datum
system shall be preserved throughout navigation and Feature. The datum feature symbol is attached as
interrogation of the presented design data. shown to the size limits imposed upon the feature. See
(c) Multiple Datum Reference Frame and Coordinate datum B in Figure 11-2, illustration (a).
Systems Relationship. When more than one datum refer- (4) Identification of a Set of Two Opposed, Parallel
ence frame is imposed upon an annotated model, each Planes (a Width). The datum feature symbol and the
distinguished datum reference frame-to-coordinate dimension and extension lines are placed on an annotation
system relationship shall be clearly presented and main- plane perpendicular to the width centerplane. The size
tained. See Figure 11-1, illustrations (a), (b), and (c) for an limits shall be organized and displayed similarly as
example of multiple datum reference frames and coordi- shown. See datum C and datum E in Figure 11-2, illustra-
nate systems organized in a single design presentation. tion (a).
(d) Datums Established From Complex or Irregular (5) Identification of Limited Area Application. When
Surfaces. A coordinate system shall be used to indicate the surface containing a datum feature also contains an
the orientation of a datum reference frame that has area of limited application of a geometric tolerance, the
been defined from complex or irregular surfaces. limited area of application is represented on the model
geometry using supplemental geometry. See Figure 11-3.
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
(e) Labeling of Datum Reference Frames. When a datum

reference frame is labeled, the label shall take the form of (6) The datum feature symbol may also be placed on
“DRF_XXX” where the datum letters of the datum refer- the horizontal portion of a leader line that is directed to the
ence frame are used in place of “XXX”. appropriate surface. See Figures 11-5 and 12-25.
44
ASME Y14.41-2019
(7) The datum feature symbol may be attached 11.2.4 Multiple Features Establishing a Datum
above or below a feature control frame. See datum B,
datum E, and datum G in Figure 11-2, illustration (b). When two or more features are combined to establish a
(b) Query of Datum Features and Design Data. A query of datum, associativity shall be established in the design
any datum feature shall permit access to all relevant infor- presentation. For several common instances, the following
mation for the datum feature. This includes the datum display and associativity requirements apply. A phantom
feature symbol, the size limits (if applicable), any line connecting the features, as depicted in ASME Y14.5,
applied geometric tolerance, and the relevant coordinate shall not be used.
system. (a) A Pattern of Features Establishing a Datum Axis.
When a pattern of features of size is used to establish
11.2.3 Datum Target Identification and a datum axis, the involved features and any applied toler-
Attachment ance for these features shall be organized as an associated
group. See Figure 11-7.
The following subparagraphs describe the require- (b) Two Coaxial Cylinders Establishing a Single Datum
ments for attaching, associating, and displaying datum Axis. When two coaxial and cylindrical datum features are
targets on annotated models. used to establish a single, common datum axis, the
(a) V-Type Equalizers. V-type equalizers shall use the involved features and any applied tolerance for these
display presentation method of Figure 11-4, illustration features shall be organized as an associated group. See
(a). The V-type equalizers shall be represented by supple- Figure 11-8.
mental geometry tangent to the cylindrical datum feature (c) Coplanar Surfaces Establishing a Datum Plane.
with the leader of a datum target symbol attached. When two or more coplanar surface features are used
(b) Movable Datum Targets. When a datum target does to establish a datum plane, the involved model surfaces
not have a fixed location, the datum target may be rep- and any applied tolerance for these surfaces shall be orga-
resented as supplemental geometry. The movable datum nized as an associated group. See Figure 11-9. When an
target symbol of ASME Y14.5 shall be attached. See intervening feature separates the surfaces being toler-
Figure 11-4, illustration (b). The direction of movement anced, the profile tolerance shall be attached to one of
shall be indicated by the addition of a represented line the surfaces but not both. See Figure 11-10.
element to the model geometry to indicate the direction
of movement. The represented line element shall be 11.3 DRAWING GRAPHIC SHEET REQUIREMENTS
placed on the outside of the material. The line element
shall be placed at the point of contact for a datum Datum features in axonometric views shall be indicated
target point, along the line for a datum target line or as follows:
within the area for a datum target area. The movement (a) Datum Reference Frame and Coordinate System
is along the represented line element. See Figure 11-4, Correspondence. The corresponding coordinate system
illustration (b). shall be displayed in each axonometric view in which a
(c) Establishing Datum Target Points on a Cylindrical datum reference frame is cited.
Surface. A datum target point on a cylindrical surface (b) Identification of Datum Features in Axonometric
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
shall use the display presentation method shown in Views. The following subparagraphs describe require-
Figure 11-5 and Figure 11-6. ments for identification of datum features in axonometric
(d) Establishing Datum Axis Targets on Two Exterior Cy- views:
lindrical Surfaces. A datum target area on a cylindrical (1) The datum feature symbol should be attached to
surface shall use the display presentation method the model geometry surface representing the datum
shown in Figure 11-6. feature. A single extension line of a feature outline
(e) Establishing a Circular Datum Target Line on a Cy- should not be used for attachment of datum feature
lindrical Surface. When the designated target for a cylin- symbols in an axonometric view.
drical datum feature is a circular line, the display and (2) Datum feature symbols may be attached to the
attachment method shown in Figure 11-6, illustration dimension for features of size when the feature is used to
(b), shall be employed, using supplemental geometry define a datum. See Figure 11-2.
to represent the circular datum target line. (c) V-Type Equalizers Using Axonometric Views. V-type
(f) Distinguishing Datum Target Areas. Datum target equalizers shall use the display presentation method of
areas shall be shown using shading or section lining. Figure 11-11, illustration (a). The V-type equalizers
See Figures 11-4 and 11-6. shall be represented by supplemental geometry
tangent to the cylindrical datum feature with the
leader of a datum target symbol attached.
(d) Movable Datum Targets Using Axonometric Views.
When a datum target does not have a fixed location,
the datum target may be represented as supplemental
45
ASME Y14.41-2019
geometry. The movable datum target symbol of ASME outside of the material. The line element shall be
Y14.5 shall be attached. See Figure 11-11, illustration placed at the point of contact for a datum target point,
(b). The direction of movement shall be indicated by along the line for a datum target line, or within the
the addition of a represented line element to the area for a datum target area. The movement is along
model geometry to indicate the direction of movement. the represented line element. See Figure 11-11, illustra-
The represented line element shall be placed on the tion (b).
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
46
ASME Y14.41-2019
Figure 11-1 Datum System and Coordinates Relationship
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
47
ASME Y14.41-2019
Figure 11-1 Datum System and Coordinates Relationship (Cont’d)
48 --``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 11-2 Datum Feature Symbol Attachments
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
49
ASME Y14.41-2019
Figure 11-3 Partial Surface as a Datum Feature

--``,,,,,`,`,,`,,,``,`,`,```,
50
ASME Y14.41-2019
Figure 11-4 Datum Targets and Symbols Attachment

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
51
ASME Y14.41-2019
Figure 11-5 Equalizing Target Points Establish a Datum Axis on an Internal Cylindrical Surface
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
52
ASME Y14.41-2019
Figure 11-6 Two Cylindrical Features Establish a Datum Axis
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
53
ASME Y14.41-2019
Figure 11-7 Pattern of Features Establish a Datum Axis
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
54
ASME Y14.41-2019
Figure 11-8 Two Coaxial Features Establish a Datum Axis
55
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 11-9 Coplanar Surfaces Establish a Datum Plane

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
56
ASME Y14.41-2019
Figure 11-10 Separated Surfaces Establish a Datum Plane
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
57
ASME Y14.41-2019
Figure 11-10 Separated Surfaces Establish a Datum Plane (Cont’d)

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
58
ASME Y14.41-2019
Figure 11-11 Datum Targets and Symbols in an Axonometric View
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
59
ASME Y14.41-2019
Section 12
Geometric Tolerances
This Section establishes the placement, attachment, and (a) Each Element Directed by Line Element. The orien-
display requirements for geometric tolerances. tation feature control frame and the EACH ELEMENT
qualifier shall be placed on an annotation plane containing
12.1 COMMON REQUIREMENTS the represented line element indicating the direction of
application. See Figure 12-9.
A general note defining a geometric tolerance may be (b) Each Element Directed by Ordinate Axis. The orien-
specified. More than one tolerance may be specified. tation feature control frame and the EACH ELEMENT
Applying GD&T in notes that are not associated to qualifier shall be placed on an annotation plane parallel
geometric elements may prohibit the use of automated and perpendicular with the absolute coordinate system or
tools to digitally consume those design requirements. an established user-defined coordinate system. See
GD&T with associativity should be used. Figure 12-10.
(c) Orienting an Axis Within a Parallel Planes Tolerance
12.2 ANNOTATED MODEL REQUIREMENTS Zone. The orientation feature control frame shall be
Paragraphs 12.2.1 through 12.2.5 address the place- related to the diametral size and any other geometric
ment, attachment, and display requirements for geometric tolerance requirement. The orientation of the extension
tolerances. lines defines the orientation of the tolerance zone. See
Figure 12-13.
12.2.1 Form Tolerances
12.2.3 Profile Tolerances
The feature control frame shall be placed on an annota-
tion plane parallel to, perpendicular to, or coincident with When a profile requirement is specified, it shall be
the surface to which it applies. See Figure 12-1. Table 12-1 attached using a directed leader. Table 12-3 lists
lists the form tolerances with the type of attachment profile applications.
method used. (a) Conical Surface or a Surface of Revolution. The
(a) Flatness, Limited Area Application. A limited area of feature control frame shall be placed on an annotation
application shall be represented on the model geometry plane perpendicular to or containing the feature’s axis
using supplemental geometry. The leader directed from of revolution. See Figure 12-14, illustration (b).
the flatness feature control frame shall be attached within (b) Multiple or Coplanar Surfaces. When a profile toler-
the represented area. See Figure 11-3. ance applies to multiple surfaces, the features shall be
(b) Circularity Applied to a Sphere, Cylinder, Cone, or a combined into an associated group. The feature control
Surface of Revolution. The feature control frame shall be frame shall be placed on an annotation plane parallel
placed on an annotation plane perpendicular to the or perpendicular to the referenced primary datum. See
feature’s axis of revolution, or containing the centerpoint Figure 12-15.
of a sphere. See Figure 12-2. (c) Between Basis. When the associated geometry is not
(c) Straightness Applied to the Line Elements of a Cylin- sufficient to indicate the application, labeled supplemental
drical or Conical Surface. The feature control frame shall be geometry may be added to indicate the boundary of appli-
placed on an annotation plane containing the axis of the cation. The between symbol may be used to clarify the
feature surface. See Figure 12-6. requirement. See Figure 12-16.
(d) All-Around Application. When the all-around
12.2.2 Orientation Tolerances symbol is used, query shall be used to identify the
controlled surfaces. See Figure 12-17.
The orientation feature control frame shall be placed on (e) Profile of a Line Directed by Line Element. The
an annotation plane parallel or perpendicular to the refer- feature control frame shall be placed on an annotation
enced primary datum. Table 12-2 lists the orientation plane containing the represented line element, parallel
tolerances with the attachment method used when an and perpendicular to the absolute coordinate system
orientation tolerance is directly applied. or an established user-defined coordinate system. See
Figure 12-18.
60 --``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
(f) Profile of a Line Directed by Ordinate Axis. The resenting each individual datum system shall be estab-
feature control frame shall be placed on an annotation lished. See Figure 12-21.
plane parallel and perpendicular to the absolute coordi- (b) Projected Tolerance Zones. The leader for a position
nate system or an established user-defined coordinate or orientation tolerance applied with a projected toler-
system. See Figure 12-19. ance zone shall be directed to the surface from which
(g) All-Over Application. When the all-over symbol is the tolerance zone projects and terminate with an arrow-
used, all of the appropriate portions of the annotated head. The feature control frame shall contain the projected
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
model should be designated as associated objects for tolerance zone symbol and the required projection value.
the profile tolerance. See Figure 12-22.
(c) Closer Control at One End of a Feature. The size
12.2.3.1 Nonuniform Tolerance Zones. A nonuniform
dimension and both feature control frames shall be
tolerance zone is used to define a tolerance zone with
collected as an associated group. For a conical tolerance
boundaries that may be any shape. See Figure 12-20.
zone, the leaders for the positional tolerances shall be
(a) Nonuniform Tolerance Zone Geometry. Nonuniform
directed to the surface to which it applies. See
tolerance zone boundaries shall be modeled at the same
Figure 12-23.
scale as the model. See para 6.1.1(a). Each nonuniform
(d) Bidirectional Positional Tolerancing for Polar and
tolerance zone boundary shall be modeled with the
Rectangular Coordinates. The callouts specifying the bidir-
proper relationship to the surface (true profile). Each
ectional requirements shall be placed on the same anno-
nonuniform tolerance zone boundary shall be modeled
tation plane as the size specification for the feature. See
such that it extends along and encompasses the entire
Figure 12-25.
toleranced feature(s). The ends of the tolerance zone
boundaries may extend beyond the extents of the toler- 12.2.5 Runout Tolerances
anced feature. See Figure 12-20. Extension of the tolerance
zone boundaries may be used to show continuation of a Table 12-5 lists runout applications and the attachment
complex contoured surface where the shape of an method that may be used. Applications of circular runout
extended tolerance zone boundary would not otherwise to a spherical, conical, or revolved surface are also listed.
be obvious. See Figure 12-20. (a) Attachment Methods for Runout Tolerances. The use
(b) Nonuniform Tolerance Zone Associativity. Nonuni- of multiple leader lines should be avoided when assigning
form tolerance zone boundaries shall be associated to runout tolerances. When the same runout control with the
the toleranced feature. The nonuniform tolerance zone, same tolerance value and datum reference (s) is applied to
nonuniform feature control frame, related annotation, multiple features, one of the following methods may be
and toleranced feature(s) shall be organized as an asso- used:
ciated group. (1) Create a single runout feature control frame for
(c) Nonuniform Tolerance Zone Display. The display of all identically controlled surfaces, and associate it to all
the nonuniform tolerance zone shall not obscure the applicable model surfaces. A note indicating the
display of the associated feature(s). Nonuniform tolerance number of surfaces to which the tolerance applies may
zone boundaries shall be capable of being: be included for additional associative emphasis. See
(1) displayed without the model or the annotated Figure 12-27, illustrations (a) and (b).
model being displayed (2) Define the geometric tolerance in a general note.
(2) displayed or hidden on demand (3) Create and attach a separate runout feature
(3) displayed in conjunction with the nonuniform control frame to each of the toleranced surfaces. See
feature control frame Figure 12-27, illustration (c).
(4) displayed only in selected views (b) Circular Runout Applied to a Spherical or Conical
Surface, or a Surface of a Revolution. The circular
12.2.4 Location Tolerances runout feature control frame shall be placed on an anno-
tation plane perpendicular to the conical or revolved
The location feature control frame shall be placed on an
feature’s axis of revolution, or containing the centerpoint
annotation plane parallel or perpendicular to the refer-
of a sphere. See Figure 12-29.
enced primary datum or on an annotation plane that is
perpendicular to or contains the feature axis or center-
plane of the toleranced feature. See Figure 7-5. Table 12.3 DRAWING GRAPHIC SHEET REQUIREMENTS
12-4 identifies location tolerance applications and the When using orthographic views, geometric tolerances
attachment method used. shall be specified in accordance with ASME Y14.5 unless
(a) Positioning Feature Patterns Individually to Indivi- otherwise specified. When axonometric views are used,
dual Datum Features. Each individual pattern of features paras. 12.3.1 through 12.3.6 provide exceptions and addi-
and the required individual datum feature shall be tional requirements.
collected as an associated group. A coordinate system rep-
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ASME Y14.41-2019
12.3.1 Requirements Applicable to all Geometric 12.3.4 Profile Tolerances

Tolerances The requirements described in para. 12.2.3 apply unless
(a) Toleranced Features. A portion of the toleranced otherwise specified. Table 12-3 lists profile applications.
feature shall be visible in the view in which the tolerance (a) Profile of a surface may be applied to a feature that
is applied. is not displayed in a profile view.
(b) Feature Control Frame Applied to a Feature of Size. (b) When an individual profile requirement is speci-
When a geometric tolerance is applied to a feature of size, fied, it shall be attached using a directed leader.
the feature control frame shall be placed below the size (c) Profile of a Surface Applied to Multiple Surfaces. The
dimension. See Figure 12-30, illustration (a). tolerance shall be specified using one of the following:
(c) Feature Control Frame Applied to a Feature. The (1) the feature control frame shall be directed to all of
leader line shall terminate on the surface with a dot. the toleranced features using one or more leader lines.
See Figure 12-30, illustration (b). (2) a qualifying note such as 2X INDICATED K shall
accompany the feature control frame and the appropriate
12.3.2 Form Tolerances features shall be identified. See Figure 12-34.
(3) the between symbol shall be placed beneath the
The requirements described in para. 12.2.1 apply unless
feature control frame. The features shall be identified with
otherwise specified. Table 12-1 lists the form tolerances
two lines to indicate the limits of the area of application.
with the type of attachment method used.
The lines shall be labeled and referred to with the between
(a) Flatness, Limited Area Application. A limited area of
symbol. See Figure 12-35.
application shall be represented using supplemental
(d) Profile of a Surface Using the All-Around Symbol.
geometry. The leader directed from the flatness feature
When the all-around symbol is used with a profile of a
control frame shall be attached within the represented
surface, it shall be shown in an orthographic view that
area. See Figure 12-31.
contains the true profile of the toleranced features.
(b) Straightness Applied to Line Elements of a Cylindrical
(e) Profile of a Line. When a line profile callout is
or Conical Surface. The feature control frame shall be
required, it shall be applied to a represented line
directed to the surface with a leader line. The direction
element showing the direction of application.
of application is parallel to the axis of the feature. See
(f) Nonuniform Profile Tolerance. When a nonuniform
Figure 12-32, illustration (a).
profile feature control frame is displayed, the nonuniform
12.3.3 Orientation Tolerances tolerance zone shall be displayed.
The requirements described in para. 12.2.2 apply unless 12.3.5 Location Tolerances
otherwise specified. Table 12-2 lists the orientation toler-
Table 12-4 identifies position tolerance applications
ances with the attachment method used when an orienta-
and the attachment method used.
tion tolerance is directly applied.
(a) The requirements described in para. 12.2.4 apply
(a) Specifying Each Element. The orientation feature
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
unless otherwise specified.
control frame and the notation EACH ELEMENT shall
(b) When a boundary control for a noncylindrical
be directed to the represented line element indicating
feature is required, the applicable geometric tolerances
the direction of application. See Figure 12-32, illustration
shall be shown in an orthographic view that contains
(b).
the true profile of the toleranced feature.
(b) Orienting an Axis With a Parallel Planes Tolerance
Zone. The orientation feature control frame shall be 12.3.6 Runout Tolerances
attached to the diametral size and any other geometric
tolerance requirement. The orientation of the extension Runout tolerances shall be applied as described in
lines defines the orientation of the tolerance zone. See para. 12.2.5. Table 12-5 lists runout applications and
Figure 12-33. the attachment method generally used.
62
ASME Y14.41-2019
Figure 12-1 General Application of Geometric Tolerances — Coincident or Perpendicular Annotation Plane
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
63
ASME Y14.41-2019
Table 12-1 Form Tolerances
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
64
ASME Y14.41-2019
Figure 12-2 Circularity — Sphere, Conical, or Revolved Surface
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
65
ASME Y14.41-2019
Figure 12-3 Cylindricity
66
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-4 Straightness — Directed by Line Element
67 --``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-5 Straightness — Directed by Ordinate Axis
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
68
ASME Y14.41-2019
Figure 12-6 Straightness — Cylindrical or Conical Surface
Figure 12-7 Straightness — Median Line and Flatness: Median Plane

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69
ASME Y14.41-2019
Table 12-2 Orientation Tolerances
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
70
ASME Y14.41-2019
Figure 12-8 Orientation — Planar Surfaces
71 --``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-9 Each Element Orientation — Directed by Line Element

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
72
ASME Y14.41-2019
Figure 12-10 Each Element Orientation — Directed by Ordinate Axis
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
73
ASME Y14.41-2019
Figure 12-11 Orientation — Inclined Surface
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
74
ASME Y14.41-2019
Figure 12-12 Orientation — Cylinder or a Set of Opposed, Parallel Surfaces
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
75
ASME Y14.41-2019
Figure 12-13 Orientation of an Axis With a Parallel Planes Tolerance Zone

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
76
ASME Y14.41-2019
Table 12-3 Profile Tolerances
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77
ASME Y14.41-2019
Figure 12-14 Profile — Planar, Conical, or Revolved Surface
78
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-15 Profile — Multiple or Coplanar Surfaces
79
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-16 Profile — Between Basis
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
80
ASME Y14.41-2019
Figure 12-17 Profile — All-Around Applications
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
81
ASME Y14.41-2019
Figure 12-18 Line Profile — Directed by Line Element

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
82
ASME Y14.41-2019
Figure 12-19 Line Profile — Directed by Ordinate Axis

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
83
ASME Y14.41-2019
Table 12-4 Location Tolerances

--``,,,,,`,`,,`,,,``,`,`,```,,`,-
84
ASME Y14.41-2019
Figure 12-20 Nonuniform Profile Tolerance Zones — Use of Supplemental Geometry
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
85
ASME Y14.41-2019
Figure 12-21 Position — Individual Patterns of Features
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
86
ASME Y14.41-2019
Figure 12-22 Position — Projected Tolerance Zones
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
87
ASME Y14.41-2019
Figure 12-23 Position — Extremities of Long Holes
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
88
ASME Y14.41-2019
Figure 12-24 Position — Elongated Holes (Slots)
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
89
ASME Y14.41-2019
Figure 12-25 Bidirectional Position — Polar or Rectangular
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
90
ASME Y14.41-2019
Figure 12-26 Position — Combined With Profile
91
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Table 12-5 Runout Tolerances

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
92
ASME Y14.41-2019
Figure 12-27 Runout — Attachments and Associativity
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
93
ASME Y14.41-2019
Figure 12-28 Runout — Perpendicular and Cylindrical Surfaces
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
94
ASME Y14.41-2019
Figure 12-29 Runout — Spherical, Conical, and Revolved Surfaces

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
95
ASME Y14.41-2019
Figure 12-30 Axonometric Views — Feature Control Frames
96
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-31 Axonometric Views — Limited Area Application
97 --``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-32 Axonometric Views — Straightness, Each Element Applications
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
98
ASME Y14.41-2019
Figure 12-33 Axonometric Views — Parallel Planes Tolerance Zone
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
99
ASME Y14.41-2019
Figure 12-34 Axonometric Views — Multiple Surfaces
100 --``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Figure 12-35 Axonometric Views — Between Basis

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
101
ASME Y14.41-2019
Section 13
Welds
This Section establishes the placement, attachment, and 13.2 ANNOTATED MODEL REQUIREMENTS
display requirements and other provisions for welds.
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
13.2.1 Annotation Plane
13.1 COMMON REQUIREMENTS The welding symbol shall be placed on an annotation
plane that is perpendicular to, or is coplanar with a portion
13.1.1 Application of Supplemental Geometry of the joint, surface, or supplemental geometry indicating
Supplemental geometry may be used to indicate the the path of the weld. See Figures 13-1 and 13-3.
path of the weld.
13.2.2 Associativity
13.1.2 Leader Line The portions of the model geometry that are being
When welding symbols are drawn using leader lines, the welded together and the weld path shall be the associated
leader line shall terminate on the joint, surface, or on geometry for the welding symbol.
supplemental geometry when supplemental geometry
is used to indicate the path of the weld. See Figure 13-1. 13.2.3 Indicating Extents of the Weld
When the associated geometry and the indicated weld
path are not sufficient to indicate the area of application,
the following techniques may be used as appropriate.
Figure 13-1 Placement of a Welding Symbol
102
ASME Y14.41-2019
When the weld applies to a limited length of the indi- When the exact location of the weld is to be defined, a
cated weld path, the extents of the weld may be indicated dimension may be applied to indicate the start of the weld.
using the between symbol and the limits of the application See Figure 13-3 and Figure 13-4.
labelled as shown in Figure 13-2.
Figure 13-2 Extent of a Weld Using the Between Symbol
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
Figure 13-3 Indication of Location of Fillet Welds
103
ASME Y14.41-2019
Figure 13-4 Indication of Location of Spot Welds
13.2.4 Query of the Weld Path 13.3 DRAWING GRAPHIC SHEET REQUIREMENTS
The geometry representing the weld path shall be high- In axonometric views, the extents of the weld may be
lighted or otherwise distinguished from other entities on indicated as they are on annotated models. See
the display upon selection of a weld symbol. See para. 13.2.3.
Figure 13-5.
Figure 13-5 Query of a Weld Path

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104
ASME Y14.41-2019
Section 14
Surface Texture
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
This Section establishes the placement, attachment, to the surfaces indicated by the dimension. See Figure
display requirements and other provisions for surface 14-4.
texture symbols.
14.2.2 Annotation Plane
14.1 COMMON REQUIREMENTS The surface texture symbol shall be placed in an anno-
No common surface texture requirements for annotated tation plane that is parallel to, perpendicular to, or coin-
models and drawing graphic sheets are defined in this cident with one of the surfaces to which it applies.
Standard.
14.2.3 Associativity
14.2 ANNOTATED MODEL REQUIREMENTS The portions of the annotated model that the surface
texture applies to shall be the associated geometry for the
14.2.1 Display Techniques surface texture symbol.
The display of surface texture symbols in annotated
14.2.4 Indication of Direction of Lay
models shall be with a leader (see Figure 14-1), or
placed adjacent to other dimensions or feature control When the lay is direction dependent, such as parallel or
frames (see Figure 14-2). perpendicular, the direction shall be indicated. This may
The surface texture symbol may also be placed after the be accomplished using supplemental geometry or associa-
dimension for a feature of size. See Figure 14-3. When the tion to an axis of a coordinate system. See Figures 14-5 and
surface texture symbol is placed below a dimension 14-6.
between opposing surfaces, the surface texture applies
Figure 14-1 Surface Texture Attached With a Leader to a Surface
105
ASME Y14.41-2019
Figure 14-2 Surface Texture Attached to a Feature Control Frame
When supplemental geometry is used to indicate the 14.3 DRAWING GRAPHIC SHEET REQUIREMENTS
direction of the lay, the surface texture symbol shall be
indicated with a leader and the leader shall terminate In axonometric views, the direction of lay may be indi-
on the supplemental geometry with an arrowhead. See cated using supplemental geometry as it is on annotated
Figure 14-6. models. See para. 14.2.4.
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
106
ASME Y14.41-2019
Figure 14-3 Surface Texture Attached to a Dimension for a Feature of Size

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
107
ASME Y14.41-2019
Figure 14-4 Surface Texture Attached to a Dimension for a Width
Figure 14-5 Direction of Lay by Ordinate Axes

--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
108
ASME Y14.41-2019
Figure 14-6 Direction of Lay With Supplemental Geometry
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
109
ASME Y14.41-2019
NONMANDATORY APPENDIX A
COMPLIANCE RESPONSIBILITY
Table A-1 contains information describing whether the need to be provided by the software to meet the require-
requirements defined in this Standard can be accom- ments.
plished completely by the data preparer or capabilities
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
110
ASME Y14.41-2019
Table A-1 Compliance Responsibility

Data Preparer Software
Table A-1 Compliance Responsibility (Cont’d)
Paragraph — Key Word(s) Responsibility Responsibility Data Preparer Software
1.4 X … Paragraph — Key Word(s) Responsibility Responsibility
4.1 X … 5.2.2(g) X …
4.1.1 X … 5.2.2(h) X …
4.1.1(a) — Length … X 5.2.2(i) X …
4.1.1(a) — PIN X … 5.2.2(j) X …
4.1.1(b) X … 5.2.2(k) X X
4.1.1(c) X … 5.3 X …
4.1.2 X … 5.3.1 X …
4.1.3 X … 5.3.1(a) X …
4.1.4 X … 5.3.1(b) X …
4.2 X … 5.3.1(c) X …
4.3.1 X … 5.3.1(d) X …
4.3.2 X … 5.3.1(e) X …
4.3.3 X … 5.3.1(f) X …
4.3.4 X … 5.3.1(g) X …
5 X … 5.3.1(h) X …
5.1.1 X … 5.3.1(i) X …
5.1.2 … X 5.3.1(j) X …
5.1.3 — Annotated Model X … 5.3.1(k) X …
5.1.3 — Axes and Label X X 5.3.1(l) X …
5.1.3 — Right-Handed X … 5.3.1(m) X …
5.1.4 X … 5.3.2 — Management Data X …
Placement
5.1.4(a) X …
5.3.2 — Does Not Rotate X
5.1.4(b) X …
5.4 X …
5.1.4(c) X …
5.4.1 — Security Marking X …
5.1.4(d) X …
5.4.1 — Available for Display … X
5.1.4(e) X …
5.4.1 — Reproductions X …
5.1.4(f) X …
5.4.1 — Does Not Rotate … X
5.1.5 X …
5.4.2 X …
5.1.6 X …
5.4.2(a) X …
5.1.7 X …
5.4.2(b) X …
5.2 X …
5.4.2(c) X X
5.2.1(a) X …
5.4.3 X …
5.2.1(b) X …
5.4.4 X …
5.2.1(b)(1) X …
6.1 X …
5.2.1(b)(2) X …
6.1.1(a) X …
5.2.1(b)(3) X …
6.1.1(b) X …
5.2.1(b)(4) X …
6.1.1(c) X …
5.2.1(b)(5) X …
6.1.2 X …
5.2.1(b)(6) X …
6.1.2(a) X …
5.2.1(c) X …
6.1.2(b) X …
5.2.2(a) X …
7.1.1 … X
5.2.2(b) X …
7.1.2 — Available on Demand … X
5.2.2(c) X …
7.1.2 — Engineering Drawing X …
5.2.2(d) X …
7.1.3(a) X …
5.2.2(e) X …
7.1.3(b) X …
5.2.2(f) X …
7.1.4 — Available on Demand … X
111
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---

ASME Y14.41-2019
Table A-1 Compliance Responsibility (Cont’d) Table A-1 Compliance Responsibility (Cont’d)
Data Preparer Software Data Preparer Software
Paragraph — Key Word(s) Responsibility Responsibility Paragraph — Key Word(s) Responsibility Responsibility
7.1.4 — Presented Using … X … 7.2.6(i) … X
7.2.1(a) X … 7.3.1(a) X …
7.2.1(b) X … 7.3.1(b) X …
7.2.1(c) X … 7.3.1(c) X …
7.2.1(d) — Continuous … X 8.2.1 — Note Placement X …
Feature Symbol 8.2.1 — Does Not Rotate … X
7.2.1(d) — Associated Objects X … 8.2.2 X …
7.2.1(d) — Extension Lines X … 8.2.3 X …
7.2.2(a) X … 8.2.4(a) X …
7.2.2(b) — Maintained … X 8.2.4(b) X …
Relative to Geometry
8.2.4(c) X …
7.2.2(b) — Relative to X …
Geometry Not Supported 8.2.4(d) … X
7.2.2(c)(1) X X 8.2.5(a) X …
7.2.2(c)(2) X … 8.2.5(b) X …
8.3.1 X …
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
7.2.2(c)(3) X …
7.2.2(d) X … 9 — Direct Tolerancing X …
7.2.2(e) X … 9 — Geometric Tolerancing X …
7.2.2(f) X … 9.1 — All Model Values X …
7.2.2(g) X … 9.1 — Queries X X
7.2.3(a) X … 9.1.1 X …
7.2.3(b)(1) X … 9.1.1(a) … X
7.2.3(b)(2) X … 9.1.1(b) X …
7.2.4 X … 9.1.1(c) … X
7.2.4(a) X … 9.1.1(d) … X
7.2.4(b) X … 9.1.1(e) X …
7.2.5 X … 9.2 X …
7.2.6 — Ability to Query … X 9.2.1 X …
7.2.6 — Query Required X … 9.2.2(a) X X
Notation 9.2.2(b) X …
7.2.6 — Enable query … X 9.2.2(c) X …
7.2.6(a) … X 9.2.2(d) X …
7.2.6(b) … X 9.2.2(e) X …
7.2.6(b)(1) … X 9.2.2(f) X …
7.2.6(b)(2) … X 9.2.3 X …
7.2.6(c) … X 9.2.3(a) X …
7.2.6(d)(1) … X 9.2.3(a)(1) X …
7.2.6(d)(2) … X 9.2.3(a)(2) X …
7.2.6(d)(3) … X 9.2.3(a)(3) X …
7.2.6(e)(1) … X 9.2.3(b)(1) X …
7.2.6(e)(2) … X 9.2.3(b)(2) X …
7.2.6(e)(3) … X 9.2.3(b)(3) X …
7.2.6(e)(4) … X 9.2.3(c) X …
7.2.6(f) … X 9.3 X …
7.2.6(g)(1) … X 9.3.1(a) X …
7.2.6(g)(2) … X 9.3.1(b) X …
7.2.6(h) … X 9.3.1(c) X …
112
ASME Y14.41-2019
Table A-1 Compliance Responsibility (Cont’d) Table A-1 Compliance Responsibility (Cont’d)
Data Preparer Software Data Preparer Software
Paragraph — Key Word(s) Responsibility Responsibility Paragraph — Key Word(s) Responsibility Responsibility
10.1 X … 12.2.3(b) X …
10.2.1 X … 12.2.3(c) X …
10.2.2 X … 12.2.3(d) X …
10.3 X … 12.2.3(e) X …
11.2.1(a) X … 12.2.3(f) X …
11.2.1(b) … X 12.2.3(g) X …
11.2.1(c) X X 12.2.3.1 X …
11.2.1(d) X … 12.2.3.1(a) X …
11.2.1(e) X X 12.2.3.1(b) X …
11.2.1(e)(1) X … 12.2.3.1(c) X X
11.2.1(e)(2) X … 12.2.4 X …
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
11.2.2(a) X … 12.2.4(a) X …
11.2.2(a)(1) X … 12.2.4(b) X …
11.2.2(a)(2) X … 12.2.4(c) X …
11.2.2(a)(3) X … 12.2.4(d) X …
11.2.2(a)(4) X … 12.2.5(a) X …
11.2.2(a)(5) X … 12.2.5(a)(1) X …
11.2.2(a)(6) X … 12.2.5(a)(2) X …
11.2.2(a)(7) X … 12.2.5(a)(3) X …
11.2.2(b) … X 12.2.5(b) X …
11.2.3(a) X … 12.3.1(a) X …
11.2.3(b) X … 12.3.1(b) X …
11.2.3(c) X … 12.3.1(c) X …
11.2.3(d) X … 12.3.2(a) X …
11.2.3(e) X … 12.3.2(b) X …
11.2.3(f) X … 12.3.3(a) X …
11.2.4 X … 12.3.3(b) X …
11.2.4(a) X … 12.3.4(a) X …
11.2.4(b) X … 12.3.4(b) X …
11.2.4(c) X … 12.3.4(c)(1) X …
11.3(a) X … 12.3.4(c)(2) X …
11.3(b)(1) X … 12.3.4(c)(3) X …
11.3(b)(2) X … 12.3.4(d) X …
11.3(c) X … 12.3.4(e) X …
11.3(d) X … 12.3.4(f) X …
12.1 X … 12.3.5(a) X …
12.2.1 X … 12.3.5(b) X …
12.2.1(a) X … 12.3.6 X …
12.2.1(b) X … 13.1.1 X …
12.2.1(c) X … 13.1.2 X …
12.2.2 X … 13.2.1 X …
12.2.2(a) X … 13.2.2 X …
12.2.2(b) X … 13.2.3 X …
12.2.2(c) X … 13.2.4 … X
12.2.3 X … 13.3 X …
12.2.3(a) X … 14.2.1 X …
113
ASME Y14.41-2019
Table A-1 Compliance Responsibility (Cont’d)

Data Preparer Software
Paragraph — Key Word(s) Responsibility Responsibility
14.2.2 X …
14.2.3 X …
14.2.4 X …
14.3 X …
GENERAL NOTE: When an "X" appears in both the "Data Preparer
Responsibility" column and the "Software Responsibility" column,
the requirement relies on both the data preparer and the software.
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,
114
ASME Y14.41-2019
NONMANDATORY APPENDIX B
CLASSIFICATION CODES FOR DRAWINGS AND DATA SETS
(This Nonmandatory Appendix is from ASME Y14.100- B-2.5 Classification Code 3: Data Set With Model
2017 and is updated to apply to this Standard.) and Simplified Drawing Graphics Sheet
--``,,,,,`,`,,`,,,``,`,`,```,,`,-`-`,,`,,`,`,,`---
Classification Code 3: identifies a model with a simplified
B-1 GENERAL drawing graphic sheet used to expedite communication of
This Nonmandatory Appendix establishes the require- common part features and to define nongeometric part
ments for classification codes. definitions.
B-1.1 Application B-2.6 Classification Code 4: Data Set With

Annotated Model and Drawing Graphics
In the event of a conflict between the contents of this
Nonmandatory Appendix and the practices detailed in Sheet
Sections 1 through 14 of this Standard, this Nonmandatory Classification Code 4: identifies that all product definition
Appendix shall take precedence when invoked. elements are located in both the digital data and drawing
graphic sheet.
B-2 DEFINITIONS
B-2.7 Classification Code 5: Data Set With
B-2.1 Annotated Model Annotated Model and No Drawing Graphic
annotated model: a combination of model, annotation, and Sheet
attributes that describe a product. Classification Code 5: identifies that all product definition
elements are located in the data set. No drawing graphic
B-2.2 Classification Code sheet exists.
classification code: a designation assigned to product defi-
nition data that defines what product definition elements B-2.8 Model
are included within the drawing graphic sheet, data set, or model: the portion of the data set that contains model
both. geometry and supplemental geometry.
NOTE: A drawing graphic sheet may be in either physical or elec-
tronic format. B-2.9 Simplified Drawing
simplified drawing: a drawing with minimal views and
B-2.3 Classification Code 1: Drawing Graphic Sheet dimensional characteristics that relies on the model to
With Optional Data Set provide complete part definition.
Classification Code 1: identifies that product definition

B-3 CLASSIFICATION CODE REQUIREMENTS
elements are located on the drawing graphic sheet.
Identify classification codes as specified herein.
B-2.4 Classification Code 2: Data Set With Model
and Drawing Graphics Sheet B-3.1 Classification Code Marking
Classification Code 2: identifies that product definition B-3.1.1 In an annotated model, the classification code
elements are located on a drawing graphic sheet. A shall be placed on an annotation plane or by a similar
computer is used as a tool to prepare the drawing graphics method.
sheet and model. Product definition elements are located
B-3.1.2 On a drawing, the classification code shall be
in the digital data and drawing graphic sheet.
displayed on a drawing graphic sheet.
B-3.1.3 The classification code shall be placed on the
associated list(s).
115
ASME Y14.41-2019
B-3.2 Approval Indicators B-3.5 Classification Code 3: Data Set With Model
Approval indicators shall be in accordance with ASME and Simplified Drawing Graphics Sheet
Y14.100. (a) The data set is the original and shall be stored and
released in a repository.
B-3.3 Classification Code 1: Drawing Graphics (b) A drawing graphic sheet shall be included in the
Sheet With Optional Data Set data set and shall be released.
(a) The data set, when used, is stored and released in a (c) The data set with model and the drawing graphic
repository. sheet shall be used as a set with the related data and shall
(b) When a data set is used, the drawing graphic sheet provide complete product definition.
shall be included in the data set.
B-3.6 Classification Code 4: Data Set With
(c) A data set, when used, is a data file that does not
include a model. Annotated Model and Drawing Graphics
(d) The drawing graphic sheet is released and is the Sheet
original. (a) The data set is the original and shall be stored and
(e) The drawing graphic sheet and related data shall released in a repository.
provide complete product definition. (b) A drawing graphic sheet shall be included in the
data set and shall be released.
B-3.4 Classification Code 2: Data Set With Model (c) The data set with annotated model and related data
and Drawing Graphics Sheet shall provide complete product definition.
(a) The data set shall be stored and released in a repo- (d) The drawing graphic sheet and related data shall
sitory. provide complete product definition.
(b) A drawing graphic sheet shall be included in the
data set. B-3.7 Classification Code 5: Data Set With
(c) The drawing graphic sheet and related data shall Annotated Model and No Drawing Graphic
provide complete product definition. Sheet
(d) The drawing graphic sheet is released and is the (a) The data set is the original and shall be stored and
original. released in a repository.
(e) The model and related data may not provide (b) The data set with annotated model and related data
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complete product definition. shall provide complete product definition.

(c) There shall not be a drawing graphic sheet.
116
Y14 ENGINEERING PRODUCT DEFINITION AND RELATED
DOCUMENTATION PRACTICES
Y14.1-2012 Decimal Inch Drawing Sheet Size and Format

Y14.1M-2012 Metric Drawing Sheet Size and Format
Y14.2-2014 Line Conventions and Lettering
Y14.3-2012 (R2018) Orthographic and Pictorial Views
Y14.5-2018 Dimensioning and Tolerancing
Y14.5.1M-1994 (R2012) Mathematical Definition of Dimensioning and Tolerancing Principles
Y14.5.2-2017 Certification of Geometric Dimensioning and Tolerancing Professionals
Y14.6-2001 (R2018) Screw Thread Representation
Y14.8-2009 (R2014) Castings, Forgings, and Molded Parts
Y14.24-2012 Types and Applications of Engineering Drawings
Y14.31-2014 (R2019) Undimensioned Drawings
Y14.34-2013 (R2018) Associated Lists
Y14.35-2014 (R2019) Revision of Engineering Drawings and Associated Documents
Y14.36-2018 Surface Texture Symbols
Y14.37-2012 Composite Part Drawings
Y14.38-2007 (R2013) Abbreviations and Acronyms for Use on Drawings and Related Documents
Y14.41-2019 Digital Product Definition Data Practices
Y14.43-2011 Dimensioning and Tolerancing Principles for Gages and Fixtures
Y14.44-2008 (R2014) Reference Designations for Electrical and Electronics Parts and Equipment
Y14.47-2019 Model Organization Practices
Y14.100-2017 Engineering Drawing Practices
Y32.7-1972 (R2014) Graphic Symbols for Railroad Maps and Profiles
Y32.18-1972 (R2013) Symbols for Mechanical and Acoustical Elements as Used in Schematic Diagrams
The ASME Publications Catalog shows a complete list of all the Standards published by the Society. For a complimentary catalog, or the latest
information about our publications, call 1-800-THE-ASME (1-800-843-2763).
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ASME Y14.41-2019
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DISTRIBUTION STATEMENT A. Approved for public release, distribution is unlimited.

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The next edition of this Standard is scheduled for publication in 2024.

ASME is the registered trademark of The American Society of Mechanical Engineers.

No part of this document may be reproduced in any form,

The American Society of Mechanical Engineers

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10-1 Attachment Techniques: Fillets, Rounds, and Chamfers . . . . . . . . . . . . . . . . . . . . . . . . . 39

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STANDARDS COMMITTEE OFFICERS

STANDARDS COMMITTEE PERSONNEL

SUBCOMMITTEE 41 — DIGITAL PROJECT DEFINITION DATA PRACTICES

Y14/SC 41 SUPPORT GROUP

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Secretary, Y14 Standards Committee

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and tolerancing and no specific subject or paragraph(s)

1.3.5 Notes 1.3.9 Precedence of Standards

1.3.6 Acronyms and Abbreviations

2.1 INTRODUCTION ASME Y14.34-2013, Associated Lists

2.2 CITED STANDARDS IEEE/ASTM SI 10-2016, American National Standard for

3.9 COORDINATE SYSTEM 3.18 DRAWING GRAPHIC SHEET

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format in accordance with ASME Y14.1 or ASME Y14.1M 3.29 PRECISION

3.38 SUPPLEMENTAL GEOMETRY 3.39.5 IEEE

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Figure 4-1 Contents of a Product Definition Data Set

Figure 5-1 Left-Hand and Right-Hand Coordinate Systems

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manipulated in three-dimensional (3D) space. See 7.2.4 Direction-Dependent Tolerances

(1) Graphic Display of Associated Entities. The asso-

Figure 7-1 Display Management

Figure 7-1 Display Management (Cont’d)

Figure 7-2 Annotation and Model Geometry Relationship

Figure 7-3 Tolerance Query Associativity

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Figure 7-3 Tolerance Query Associativity (Cont’d)

Figure 7-4 Simplified Feature Representation and Attributes

Figure 7-5 Annotation Planes Relative to Annotated Model Geometry

Figure 7-6 Graphic Display of Associated Annotation

Figure 7-7 Listing of Digital Element Identifiers

Figure 7-9 Queries for Datum Targets

Figure 7-10 Queries for Coordinates and Supplemental Geometry

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Figure 7-11 Annotated Model

Figure 7-12 Model and Drawing Graphic Sheet

Figure 7-13 Query for Nonuniform Tolerance Zones

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Figure 9-1 Placement and Attachment of Basic Dimensions

Figure 9-2 Placement and Attachment of Size Dimensions

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Table 9-1 Resolved Dimension Examples