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    JIS-B-1251 Product Catalogue

    Uploaded by

    Prabath Madusanka
    This document provides specifications for spring washers in various sizes ranging from M2 to M39 in metric units and fractions of inches. For each size, it lists the inner diameter, tolerance, section width and thickness, outer diameter tolerance, and materials which include spring steel, stainless steel #304 and #316, and various surface finishes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    JIS-B-1251 Product Catalogue

    Uploaded by

    Prabath Madusanka
    358 views4 pages
    This document provides specifications for spring washers in various sizes ranging from M2 to M39 in metric units and fractions of inches. For each size, it lists the inner diameter, tolerance, section width and thickness, outer diameter tolerance, and materials which include spring steel, stainless steel #304 and #316, and various surface finishes.

    Original Description:

    This is a supplier product catalogue

    Original Title

    JIS-B-1251 product catalogue

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    © © All Rights Reserved

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    This document provides specifications for spring washers in various sizes ranging from M2 to M39 in metric units and fractions of inches. For each size, it lists the inner diameter, tolerance, section width and thickness, outer diameter tolerance, and materials which include spring steel, stainless steel #304 and #316, and various surface finishes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    358 views4 pages

    JIS-B-1251 Product Catalogue

    Uploaded by

    Prabath Madusanka
    This document provides specifications for spring washers in various sizes ranging from M2 to M39 in metric units and fractions of inches. For each size, it lists the inner diameter, tolerance, section width and thickness, outer diameter tolerance, and materials which include spring steel, stainless steel #304 and #316, and various surface finishes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 4

    SPRING WASHER

    WASHER
    (JIS B 1251)
    1251)

    Material

    Spring Steel

    Finished

    #304 Stainless Steel #304


    #316 Stainless Steel #316
    Size
    ID (A)
    Tol.
    Basic
    mm
    inch
    M2
    M2.3
    M2.6
    M3
    (M3.5)
    M4
    (M4.5)
    M5
    (M5.5)
    M6
    M8
    M10

    (1/4)
    (5/16)
    3/8

    mm
    2.1
    2.4
    2.7
    3.1
    3.6
    4.2
    4.7
    5.2
    5.6
    6.2
    6.5
    8.2
    9.8
    10.3

    +
    0.25
    0.25
    0.3
    0.3
    0.3
    0.4
    0.4
    0.4
    0.4
    0.4
    0.4
    0.5
    0.5
    0.5

    Plain
    Zinc Plated
    Zinc Yellow
    Nickel
    Black Oxide

    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0

    (P)
    (Z)
    (Y)
    (N)
    (B)

    Section W x T
    WxT
    0.80.4
    0.80.4
    0.90.5
    1.00.6
    1.00.6
    1.20.8
    1.30.9
    1.51.0

    2.61.2

    3.01.4
    3.51.8
    3.61.9

    Remark

    OD

    (B)
    Tol. (Max)
    4.1
    4.5
    5.1
    5.7
    6.2
    7.3
    8
    8.9

    12.1

    15
    17.6
    18.3

    Remark

    Size
    mm
    M12
    M14
    M16
    M18
    M20
    M22
    M24
    (M27)
    M30
    (M33)
    M36
    M39
    M2
    M2.3
    M2.6
    M3
    (M3.5)
    M4
    (M4.5)
    M5
    (M5.5)
    M6
    M8

    inch
    (7/16)
    1/2
    5/8
    3/4
    7/8
    1
    1-1/8
    1-1/4
    1-3/8
    1-1/2

    (1/4)
    (5/16)

    Basic
    mm
    11.4
    12.3
    13
    14.4
    16.4
    18.5
    19.5
    20.5
    22.8
    24.6
    26
    27.7
    29.3
    30.7
    32.5
    33.8
    35.8
    36.9
    39
    2.1
    2.4
    2.7
    3.1
    3.6
    4.2
    4.7
    5.2
    5.6
    6.2
    6.5
    8.2

    ID
    Tol.
    +
    0.5
    0.6
    0.6
    0.6
    0.8
    0.8
    0.8
    0.8
    1
    1
    1
    1.2
    1.2
    1.2
    1.2
    1.4
    1.4
    1.4
    1.4
    0.25
    0.25
    0.3
    0.3
    0.3
    0.4
    0.4
    0.4
    0.4
    0.4
    0.4
    0.5

    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0

    Section W x T
    WxT
    3.92.2
    4.12.4
    4.32.5
    (4.62.8)
    (5.13.2)
    (5.63.7)
    (5.93.9)
    (6.14.1)
    (6.74.6)
    (7.04.9)
    (7.35.1)
    (7.75.4)
    (8.05.7)
    (8.26.0)
    (8.56.4)
    (8.76.4)
    (9.06.7)
    (9.26.9)
    (9.57.2)
    0.90.5
    1.00.6
    1.00.6
    1.10.7
    1.20.8
    1.41.0
    1.51.2
    1.71.3
    1.81.4
    2.71.5
    2.81.6
    3.22.0

    OD

    (B)
    Tol. (Max)
    20
    21.4
    22.5
    (24.5)
    (28)
    (31.1)
    (32.7)
    (34.1)
    (37.8)
    (40.2)
    (42.4)
    (45.1)
    (47.3)
    (49.1)
    (51.5)
    (53.4)
    (56)
    (57.5)
    (60.2)
    4.4
    4.9
    5.3
    5.9
    6.6
    7.7
    8.4
    9.3
    9.9
    12.3
    12.5
    15.4

    Remark

    Size
    mm
    M10
    M12
    M14
    M16
    M18
    M20
    M22
    M24
    (M27)
    M30
    (M33)
    M36
    M39
    M2
    M2.3
    M2.6
    M3
    (M3.5)
    M4
    (M4.5)
    M5
    (M5.5)
    M6

    inch
    3/8
    (7/16)
    1/2
    5/8
    3/4
    7/8
    1
    1-1/8
    1-1/4
    1-3/8
    1-1/2

    Basic
    mm
    9.8
    10.3
    11.4
    12.3
    13
    14.4
    16.4
    18.5
    19.5
    20.5
    22.8
    24.6
    26
    27.7
    29.3
    30.7
    32.5
    33.8
    35.8
    36.9
    39
    2.1
    2.4
    2.7
    3.1
    3.6
    4.2
    4.7
    5.2
    5.6
    6.2

    ID
    Tol.
    +
    0.5
    0.5
    0.5
    0.6
    0.6
    0.6
    0.8
    0.8
    0.8
    0.8
    1
    1
    1
    1.2
    1.2
    1.2
    1.2
    1.4
    1.4
    1.4
    1.4
    0.25
    0.25
    0.3
    0.3
    0.3
    0.4
    0.4
    0.4
    0.4
    0.4

    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0

    Section W x T
    WxT
    3.62.4
    3.72.5
    4.02.8
    4.23.0
    4.43.2
    4.73.5
    5.24.0
    5.74.6
    5.94.8
    6.15.1
    6.85.6
    7.15.9
    7.56.4
    7.96.8
    8.37.1
    8.77.5
    9.17.9
    9.58.2
    9.98.7
    10.29.0
    10.79.5
    (1.00.6)
    (1.10.7)
    (1.20.8)
    (1.30.9)
    (1.41.0)
    (1.61.2)
    (1.71.4)
    (1.91.5)

    2.71.9

    OD

    (B)
    Tol. (Max)
    17.8
    18.5
    20.2
    21.6
    22.7
    24.7
    28.2
    31.3
    32.7
    34.1
    38
    40.4
    42.8
    45.5
    47.9
    30.1
    52.7
    55
    57.8
    59.5
    62.6
    (4.6)
    (5.1)
    (5.7)
    (6.3)
    (7)
    (8.1)
    (8.8)
    (9.7)

    12.3

    Remark

    Size
    mm

    inch

    M8

    (1/4)
    (5/16)
    3/8

    M10
    M12
    M14
    M16
    M18
    M20
    M22
    M24
    (M27)
    M30
    (M33)
    M36
    M39

    (7/16)
    1/2
    5/8
    3/4
    7/8
    1
    1-1/8
    1-1/4
    1-3/8
    1-1/2

    Basic
    mm
    6.5
    8.2
    9.8
    10.3
    11.4
    12.3
    13
    14.4
    16.4
    18.5
    19.5
    20.5
    22.8
    24.6
    26
    27.7
    29.3
    30.7
    32.5
    33.8
    35.8
    36.9
    39

    ID
    Tol.
    +
    0.4
    0.5
    0.5
    0.5
    0.5
    0.6
    0.6
    0.6
    0.8
    0.8
    0.8
    0.8
    1
    1
    1
    1.2
    1.2
    1.2
    1.2
    1.4
    1.4
    1.4
    1.4

    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0
    0

    Section W x T
    WxT
    2.82.0
    3.32.5
    3.72.9
    3.93.0
    4.13.4
    4.43.6
    4.53.8
    4.84.2
    5.34.8
    5.95.4
    6.25.7
    6.46.0
    7.16.8
    7.67.2
    8.17.8
    8.68.3

    OD

    (B)
    Tol. (Max)
    12.5
    15.6
    18.2
    18.9
    20.4
    22
    22.9
    24.9
    28.4
    31.7
    33.3
    34.7
    38.6
    41.4
    44
    46.9

    Remark

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