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普通公制螺纹:基准尺寸摘自“JIS B 0205-4 : 2001”

  • 标称直径=外螺纹外径
    d
    螺距
    P
    有效直径
    D2, d2
    内螺纹内径
    D1
    1 0.25
    0.2
    0.838
    0.870
    0.729
    0.783
    1 0.25
    0.2
    0.838
    0.870
    0.729
    0.783
    1.1 0.25
    0.2
    0.938
    0.970
    0.829
    0.883
    1.2 0.25
    0.2
    1.038
    1.070
    0.929
    0.983
    1.4 0.3
    0.2
    1.205
    1.270
    1.075
    1.183
    1.6 0.35
    0.2
    1.373
    1.470
    1.221
    1.383
    1.8 0.35
    0.2
    1.573
    1.670
    1.421
    1.583
    2 0.4
    0.25
    1.740
    1.838
    1.567
    1.729
    2.2 0.45
    0.25
    1.908
    2.038
    1.713
    1.929
    2.5 0.45
    0.35
    2.208
    2.273
    2.013
    2.121
    3 0.5
    0.35
    2.675
    2.773
    2.459
    2.621
    3.5 0.6
    0.35
    3.110
    3.273
    2.850
    3.121
    4 0.7
    0.5
    3.545
    3.675
    3.242
    3.459
    4.5 0.75
    0.5
    4.013
    4.175
    3.688
    3.959
    5 0.8
    0.5
    4.480
    4.675
    4.134
    4.459
    5.5 0.5 5.175 4.959
    6 1
    0.75
    5.350
    5.513
    4.917
    5.188
    7 1
    0.75
    6.350
    6.513
    5.917
    6.188
    8 1.25
    1
    0.75
    7.188
    7.350
    7.513
    6.647
    6.917
    7.188
    9 1.25
    1
    0.75
    8.188
    8.350
    8.513
    7.647
    7.917
    8.188
  • 标称直径=外螺纹外径
    d
    螺距
    P
    有效直径
    D2, d2
    内螺纹内径
    D1
    10 1.5
    1.25
    1
    0.75
    9.026
    9.188
    9.350
    9.513
    8.376
    8.647
    8.917
    9.188
    11 1.5
    1
    0.75
    10.026
    10.350
    10.513
    9.376
    9.917
    10.188
    12 1.75
    1.5
    1.25
    1
    10.863
    11.026
    11.188
    11.350
    10.106
    10.376
    10.647
    10.917
    14 2
    1.5
    1.25
    1
    12.701
    13.026
    13.188
    13.350
    11.835
    12.376
    12.647
    12.917
    15 1.5
    1
    14.026
    14.350
    13.376
    13.917
    16 2
    1.5
    1
    14.701
    15.026
    15.350
    13.835
    14.376
    14.917
    17 1.5
    1
    16.026
    16.350
    15.376
    15.917
    18 2.5
    2
    1.5
    1
    16.376
    16.701
    17.026
    17.350
    15.294
    15.835
    16.376
    16.917
    20 2.5
    2
    1.5
    1
    18.376
    18.701
    19.026
    19.350
    17.294
    17.835
    18.376
    18.917
    22 2.5
    2
    1.5
    1
    20.376
    20.701
    21.026
    21.350
    19.294
    19.835
    20.376
    20.917
    24 3
    2
    1.5
    1
    22.051
    22.701
    23.026
    23.350
    20.752
    21.835
    22.376
    22.917
    25 2
    1.5
    1
    23.701
    24.026
    24.350
    22.835
    23.376
    23.917
    26 1.5 25.026 24.376
    27 3
    2
    1.5
    1
    25.051
    25.701
    26.026
    26.350
    23.752
    24.835
    25.376
    25.917
    28 2
    1.5
    1
    26.701
    27.026
    27.350
    25.835
    26.376
    26.917
  • 标称直径=外螺纹外径
    d
    螺距
    P
    有效直径
    D2, d2
    内螺纹内径
    D1
    30 3.5
    3
    2
    1.5
    1
    27.727
    28.051
    28.701
    29.026
    29.350
    26.211
    26.752
    27.835
    28.376
    28.917
    32 2
    1.5
    30.701
    31.026
    29.835
    30.376
    33 3.5
    3
    2
    1.5
    30.727
    31.051
    31.701
    32.026
    29.211
    29.752
    30.835
    31.376
    35 1.5 34.026 33.376
    36 4
    3
    2
    1.5
    33.402
    34.051
    34.701
    35.026
    31.670
    32.752
    33.835
    34.376
    38 1.5 37.026 36.376
    39 4
    3
    2
    1.5
    36.402
    37.051
    37.701
    38.026
    34.670
    35.752
    36.835
    37.376
    40 3
    2
    1.5
    38.051
    38.701
    39.026
    36.752
    37.835
    38.376
    42 4.5
    4
    3
    2
    1.5
    39.077
    39.402
    40.051
    40.701
    41.026
    37.129
    37.670
    38.752
    39.835
    40.376
    45 4.5
    4
    3
    2
    1.5
    42.077
    42.402
    43.051
    43.701
    44.026
    40.129
    40.670
    41.752
    42.835
    43.376
    48 5
    4
    3
    2
    1.5
    44.752
    45.402
    46.051
    46.701
    47.026
    42.587
    43.670
    44.752
    45.835
    46.376
    50 3
    2
    1.5
    48.051
    48.701
    49.026
    46.752
    47.835
    48.376

参考 公螺纹外径的基准尺寸d与内螺纹大径的基准尺寸D相等。内螺纹外径的基准尺寸D1与公螺纹大径的基准尺寸d1相等。