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螺纹攻牙钻孔径和滚造径对照表(老全了)

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    2024-7-25 09:48
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    发表于 2016-9-6 00:05:17 | 只看该作者 回帖奖励 |正序浏览 |阅读模式
    本帖最后由 小编薇薇 于 2016-9-6 00:11 编辑

    本表所推选钻头孔径,是针对攻牙加工时,能够很容易的了解钻头直径;而依据市售之标准钻头所选定的.在使用钻头的情况下,由于钻头的形状及尺寸,精度,被钻孔之材质等,对于所钻孔的尺寸,精度有很大影响,所以使用本表之钻孔径,若有不当之处,应实际状况适当的变更钻头直径,本表依据2级牙制订.
    公 制 精 螺 纹
    规格标准径
    2级牙钻孔径
    最大
    最小
    M1.0×0.250.75
    0.785
    0.729
    M1.1×0.250.85
    0.885
    0.829
    M1.2×0.250.95
    0.985
    0.929
    M1.4×0.31.10
    1.142
    1.075
    M1.6×0.351.25
    1.321
    1.221
    M1.7×0.35
    1.35
    1.421
    1.321
    M1.8×0.35
    1.45
    1.521
    1.421
    M2.0×0.4
    1.60
    1.679
    1.567
    M2.2×0.45
    1.75
    1.838
    1.713
    M2.3×0.4
    1.90
    1.979
    1.867
    M2.5×0.45
    2.10
    2.138
    2.013
    M2.6×0.45
    2.20
    2.238
    2.113
    M3.0×0.5
    2.50
    2.599
    2.459
    M3.0×0.6
    2.40
    2.44
    2.280
    M3.5×0.6
    2.90
    3.010
    2.850
    M4.0×0.7
    3.30
    3.422
    3.242
    M4.0×0.75
    3.25
    3.326
    3.106
    M4.5×0.75
    3.80
    3.878
    3.688
    M5.0×0.8
    4.20
    4.334
    4.134
    M5.0×0.9
    4.10
    4.170
    3.930
    M6.0×1.0
    5.00
    5.153
    4.917
    M7.0×1.0
    6.00
    6.153
    5.917
    M8.0×1.25
    6.80
    6.912
    6.647
    M9.0×1.25
    7.80
    7.912
    7.647
    M10×1.5
    8.50
    8.676
    8.376
    M11×1.5
    9.50
    9.676
    9.376
    M12×1.75
    10.30
    10.441
    10.106
    M14×2.0
    12.00
    12.210
    11.735
    M16×2.0
    14.00
    14.210
    13.835
    M18×2.5
    15.50
    15.744
    15.294
    M20×2.5
    17.50
    17.744
    17.294
    M22×2.5
    19.50
    19.744
    19.294
    M24×3.0
    21.00
    21.252
    2.752
    M27×3.0
    24.00
    24.252
    23.752
    M30×3.5
    26.50
    26.771
    26.211

    公 制 细 螺 纹
    规格标准径
    2级牙钻孔径
    最大
    最小
    M1.0×0.20.80
    0.821
    0.783
    M1.1×0.20.90
    0.921
    0.883
    M1.2×0.21.00
    1.021
    0.983
    M1.4×0.21.20
    1.221
    0.183
    M1.6×0.21.40
    1.421
    1.383
    M1.7×0.2
    1.45
    1.500
    1.460
    M1.8×0.2
    1.60
    1.621
    1.583
    M2.0×0.25
    1.75
    1.785
    1.729
    M2.2×0.25
    1.95
    1.985
    1.929
    M2.3×0.25
    2.05
    2.061
    2.001
    M2.5×0.35
    2.20
    2.221
    2.121
    M2.6×0.35
    2.20
    2.246
    2.186
    M3.0×0.35
    2.70
    2.721
    2.621
    M3.5×0.35
    3.20
    3.221
    3.121
    M4.0×0.5
    3.50
    3.599
    3.459
    M4.5×0.5
    4.00
    4.099
    3.959
    M5×0.5
    4.50
    4.599
    4.459
    M5.5×0.5
    5.00
    5.099
    4.959
    M6.0×0.75
    5.30
    5.378
    5.188
    M6.0×0.5
    5.50
    5.550
    5.400
    M7.0×0.75
    6.30
    6.378
    61.88
    M7.0×0.5
    6.50
    6.550
    64.00
    M8.0×1.0
    7.00
    7.153
    6.917
    M8.0×0.75
    7.30
    7.378
    7.188
    M8×0.5
    7.50
    7.520
    7.400
    M9×1.0
    8.00
    8.153
    7.917
    M9×0.75
    8.30
    8.378
    8.188
    M10×1.25
    8.80
    8.912
    8.647
    M10×1.0
    9.00
    9.153
    8.917
    M10×0.75
    9.30
    9.378
    9.188
    M10×0.5
    9.50
    9.520
    9.400
    M11×1.0
    10.00
    10.153
    9.917
    M11×0.75
    10.30
    10.378
    10.188
    M11×1.5
    10.50
    10.676
    10.376
    M12×1.25
    10.80
    10.912
    10.647

    公 制 细 螺 纹
    规格标准径
    2级牙钻孔径
    最大
    最小
    M12×1.011.00
    11.153
    10.917
    M12×0.511.50
    11.520
    11.4
    M14×1.512.50
    12.676
    12.376
    M14×1.013.00
    13.153
    12.917
    M15×1.513.50
    13.676
    13.376
    M15×1.0
    14.00
    14.153
    13.917
    M16×1.5
    14.50
    14.676
    14.376
    M16×1.0
    15.00
    15.153
    14.917
    M17×1.5
    15.50
    15.676
    15.376
    M17×1.0
    16.00
    16.153
    15.917
    M18×2.0
    16.00
    16.210
    15.835
    M18×1.5
    16.50
    16.670
    16.376
    M18×1.0
    17.00
    17.153
    16.917
    M20×2.0
    18.00
    18.210
    17.835
    M20×1.5
    18.50
    18.676
    18.376
    M20×1.0
    19.00
    19.153
    18.917
    M20×2.0
    20.00
    20.210
    19.835
    M22×1.5
    20.50
    20.676
    20.376
    M22×1.0
    21.00
    21.153
    20.917
    M24×2.0
    22.00
    22.210
    21.835
    M24×1.5
    22.50
    22.676
    22.376
    M24×1.0
    23.00
    23.153
    22.917
    M25×2.0
    23.00
    23.210
    22.835
    M25×1.5
    23.50
    23.676
    23.376
    M25×1.0
    24.00
    24.153
    23.917
    M26×1.5
    24.50
    24.676
    24.376
    M27×2.0
    25.00
    25.210
    24.835
    M27×1.5
    25.50
    25.676
    25.376
    M27×1.0
    26.00
    26.153
    25.917
    M28×2.0
    26.00
    26.210
    25.835
    M28×1.5
    26.50
    26.676
    26.376
    M28×1.0
    27.00
    27.153
    26.917
    M30×3.0
    27.00
    27.252
    26.752
    M30×2.0
    28.00
    28.210
    27.835
    M30×1.5
    28.50
    28.676
    28.376
    M30×1.0
    29.00
    29.153
    28.917
    M32×2.0
    30.00
    30.210
    29.835
    M32×1.5
    30.50
    30.676
    30.376
    M33×3.0
    30.00
    30.252
    29.752
    M33×2.0
    31.00
    31.210
    30.835
    M33×1.5
    31.50
    31.376
    31.376
    M35×1.5
    33.50
    33.676
    33.376
    M36×3.0
    33.00
    33.252
    32.752
    M36×2.0
    34.00
    34.210
    33.835
    M36×1.5
    34.50
    34.676
    34.376

    美 制 细 螺 纹
    规格(UNF)标准径
    2级牙钻孔径
    最大
    最小
    番数牙外径

    NO.0-80(1.524)
    1.25
    1.305
    1.182
    NO.1-72(1.854)
    1.55
    1.612
    1.474
    NO.2-64(2.184)
    1.85
    1.912
    1.756
    NO.3-56(2.515)
    2.10
    2.197
    2.025
    NO.4-48(2.845)
    2.40
    2.458
    2.271
    NO.5-44(3.175)2.702.7402.551
    NO.6-40(3.505)2.903.0222.820
    NO.8-36(4.166)3.503.6063.404
    NO.10-32(4.826)4.104.1653.963
    NO.12-28(5.846)4.604.7244.496
    1/4 -285.505.5885.360
    5/16 -246.907.0356.782
    3/8 -248.508.6368.382
    7/16 -209.9010.0339.729
    1/2 -2011.5011.60711.329
    9/16 -1812.9013.08112.751
    5/8 -1814.5014.68114.351
    3/4 -1617.5014.67817.323
    7/8 -1420.5020.67520.270
    1 -1223.2023.57123.114
    1-1/8 -12
    26.50
    26.74626.289
    1-1/4 -12
    29.50
    29.92129.464
    1-3/8 -12
    32.80
    33.09632.464
    1-1/2 -12
    36.00
    36.27035.814

    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    无 屑 丝 攻 钻 孔 径
    规格
    精度等级
    RH4.5.6
    RH7.8
    RH9
    M1.0×0.250.86
    0.88
    -
    M1.1×0.250.96
    0.98
    -
    M1.2×0.251.06
    1.08
    -
    M1.4×0.31.24
    1.25
    -
    M1.6×0.351.41
    1.43
    -
    M1.7×0.35
    1.51
    1.53
    -
    M1.8×0.35
    1.61
    1.63
    -
    M2.0×0.4
    1.78
    1.80
    -
    M2.2×0.45
    1.95
    1.98
    -
    M2.3×0.4
    2.08
    2.10
    -
    M2.5×0.45
    2.25
    2.28
    -
    M2.6×0.45
    2.35
    1.38
    -
    M3.0×0.5
    2.73
    2.75
    -
    M3.0×0.6
    3.17
    3.20
    -
    M4.0×0.7
    3.62
    3.65
    3.69
    M5.0×0.8
    4.56
    4.60
    4.64
    M6.0×1.0
    5.45
    5.50
    5.55
    M7.0×1.0
    6.45
    6.50
    6.55
    M8.0×1.25
    7.31
    7.38
    7.44
    M10×1.5
    9.18
    9.25
    9.32
    M10×1.25
    9.31
    9.38
    9.44
    M12×1.75
    11.04
    11.12
    11.21
    M12×1.25
    11.31
    11.38
    11.44
    注:无槽丝攻之钻孔径,在上表所列之数值,由于被加工材料之材质、硬度、形状、尺寸等之影响,多少会有所变动,因此参考上表之同时,亦请增减若干.


    [tr][/tr]
    美 制 管 螺 纹
    规格(UNEF)标准径
    2级牙钻孔径
    最大
    最小
    NO.12 -324.704.8264.623
    1/4 -325.605.6905.486
    5/16 -327.107.2647.087
    3/8 -328.708.8658.661
    7/16 -2810.2010.33810.135
    1/2 -2811.8011.93811.709
    9/16 -2813.2013.38613.132
    5/8 -2414.8014.98614.732
    3/4 -2017.8017.95817.678
    7/8 -2021.0021.13320.853
    1 -2024.0024.30824.028

    美 制 粗 螺 纹
    规格(UNC)标准径
    2级牙钻孔径
    番数牙外径
    最大
    最小
    NO.1-64(1.854)1.55
    1.582
    1.425
    NO.2-56(2.184)1.80
    1.871
    1.695
    NO.3-48(2.515)2.10
    2.146
    1.941
    NO.4-40(2.845)2.30
    2.385
    2.157
    NO.5-40(3.175)2.60
    2.697
    2.487
    NO.6-32(3.505)2.80
    2.895
    2.642
    NO.8-32(4.166)3.403.5303.302
    NO.10-24(4.826)3.903.9623.682
    NO.12-24(5.846)4.504.5974.344
    1/4 -205.105.2574.979
    5/16 -186.606.7316.401
    3/8 -168.008.1537.987
    7/16 -149.409.5009.144
    1/2 -1310.8011.02310.592
    9/16 -1212.2012.44611.989
    5/8 -1113.6012.86813.386
    3/4 -1016.2016.84016.307
    7/8 -919.5019.76119.177
    1 -822.2022.60621.971
    1-1/8 -725.0025.34924.638
    1-1/4 -728.2028.52427.813
    1-3/8 -6
    30.80
    31.11530.353
    1-1/2 -6
    34.00
    34.29033.528
    1-3/4 -5
    39.50
    39.82738.964
    2 -4-1/2
    45.20
    45.59344.679


    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    英 制 螺 纹
    规格
    钻孔径
    硬材
    软材
    W1/8 - 40
    2.65
    2.60
    W5/32 - 32
    3.25
    3.20
    W3/16 - 24
    3.75
    3.70
    W1/4 - 20
    5.10
    5.00
    W5/16 - 18
    6.60
    6.50
    W3/8 - 16
    8.00
    7.90
    W7/16 - 14
    9.40
    9.30
    W1/2 - 12
    10.70
    10.50
    W9/16 - 12
    12.30
    12.00
    W5/8 - 11
    13.70
    13.50
    W3/4 - 10
    16.70
    16.50
    W7/8 - 9
    19.50
    19.30
    W1 - 8
    22.40
    22.00
    W1-1/8 - 7
    25.00
    24.80
    W1-1/4 - 7
    28.30
    28.00

    英 制 管 螺 纹
    规格标准径
    钻 孔 径
    最大
    最小
    PS1/16 -286.506.632
    6.490
    PS1/8 -288.508.637
    8.495
    PS1/4 - 1911.4011.549
    11.341
    PS3/8 - 1915.0015.054
    14.846
    PS1/2 - 1418.5018.773
    18.489
    PS3/4 - 1424.0024.259
    23.975
    PS1 - 1130.2030.471
    30.111
    PS1-1/4 -1138.8039.132
    38.772
    PS1-1/2 -1144.8045.025
    44.665
    PS2 - 1156.5056.836
    56.476

    英 制 管 螺 纹
    规格
    标准径
    有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径
    使用绞刀时
    不用绞刀时
    PT1/16 -286.10
    6.2
    6.244
    6.384
    PT1/8 -288.10
    8.2
    8.249
    8.388
    PT1/4 -1910.70
    11
    10.962
    11.174
    PT3/8 -1914.20
    14.5
    14.448
    14.658
    PT1/2 -1417.60
    18
    17.979
    18.263
    PT3/4 -14
    23.00
    23.5
    23.378
    23.663
    Pt1 -11
    29.00
    29.5
    29.459
    29.822
    PT1-1/4 -11
    37.50
    38
    37.976
    38.339
    PT1-1/2 -11
    43.40
    44
    43.869
    44.232
    Pt2 -11
    54.90
    55.5
    55.412
    55.844

    美 制 螺 纹 滚 造 径
    规格钻孔径
    NPTNPS
    使用绞刀时
    不用绞刀时
    1/16 -276.16.256.35
    1/8 -278.338.438.74
    1/4 -1810.7211.1311.13
    3/8 -18
    14.27
    14.2714.68
    1/2 -1417.4817.8618.26
    3/4 -1422.6323.0123.42
    1 -11-1/228.5828.9829.36
    1-1/4-11-1/237.3137.6938.1
    1-1/2-11-1/243.6644.0444.45
    2 -11-1/255.5855.9656.36

    英 制 螺 纹 滚 造 径
    规格
    滚造径
    W 3/16 - 24
    4.08 - 4.05
    W 1/4 - 20
    5.51 - 5.46
    W 5/16 - 18
    7.01 - 6.95
    W 3/8 - 16
    8.48 - 8.41
    W 7/16 - 14
    9.92 - 9.85
    W 1/2 - 12
    11.31 - 11.24
    W 9/16 -12
    12.89 - 12.82
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    公 制 螺 纹
    规格滚造径
    M3.0×0.5
    2.63 2.60
    M3.0×0.6
    2.56 2.53
    M3.5×0.6
    3.06 3.03
    M4.0×0.7
    3.49 3.45
    M4.0×0.75
    3.45 3.41
    M4.5×0.75
    3.96 3.92
    M5.0×0.8
    4.43 4.38
    M5.0×0.9
    4.36 4.31
    M6.0×1.0
    5.30 5.25
    M7.0×1.0
    6.30 6.25
    M8.0×1.0
    7.28 - 7.23
    M8.0×1.25
    7.12 - 7.07
    M9.0×1.25
    8.12 - 8.07
    M10×1.25
    9.10 - 9.04
    M10×1.5
    8.97 - 8.91
    M11×1.5
    9.97 - 9.91
    M12×1.5
    10.92 - 10.87
    M12×1.75
    10.79 - 10.73
    M14×2.0
    12.63 - 12.56
    M16×2.0
    14.63 - 14.56
    M18×2.5
    16.31 - 16.23
    M20×2.5
    18.31 - 18.23
    M22×2.5
    20.31 - 20.23

    针 车 用 螺 纹
    规格(UNC)
    滚造径
    SM 1/8 402.735 -2.688
    SM 1/8 442.769 -2.722
    SM 9/64 403.128 -3.083
    SM 11/64 403.855 -3.805
    SM 3/16 324.205 -4.155
    SM 3/16 28
    4.143 -4.093
    SM 7/32 32
    5.003 -4.955
    SM 15/64 28
    5.325 -4.955
    SM 1/4 40
    5.890 -5.735
    SM 1/4 28
    5.721 -5.366
    SM 9/32 28
    6.528 -6.648
    SM 11/32 28
    8.092 -8.432
    SM 3/8 29
    8.880 -8.015
    SM 7/16 30
    10.466 -10.401
    SM 7/16 16
    10.037 -9.967
    SM 1/2 2011.819 -11.749
    SM 9/16 2013.400 -13.425

    美 制 粗 螺 纹
    规格(UNC)
    滚造径
    NO.5-40
    2.70 - 2.67
    NO.6-32
    2.95 - 2.91
    NO.8-32
    3.60 - 3.57
    NO.10-24
    4.09 - 4.05
    NO.12-24
    4.75 - 4.70
    1/4 -20
    5.50 - 5.45
    5/16 -18
    6.98 - 6.93
    3/8 -16
    8.45 - 8.40
    7/16 -14
    9.89 - 9.83
    1/2 -13
    11.39 - 11.32
    9/16 -12
    12.87 - 12.80

    美 制 细 螺 纹
    规格(UNF)
    滚造径
    NO.5-44
    2.73 - 2.70
    NO.6-40
    3.05 - 3.02
    NO.8-36
    3.66 - 3.63
    NO.10-32
    4.26 - 4.80
    NO.12-28
    4.84 - 4.80
    1/4 -28
    5.72 - 5.68
    5/16 -24
    7.20 - 7.16
    3/8 -24
    8.79 - 8.74
    7/16 -20
    10.23 - 10.18
    1/2 -20
    11.82 - 11.76

    本表所推选钻头孔径,是针对攻牙加工时,能够很容易的了解钻头直径;而依据市售之标准钻头所选定的.在使用钻头的情况下,由于钻头的形状及尺寸,精度,被钻孔之材质等,对于所钻孔的尺寸,精度有很大影响,所以使用本表之钻孔径,若有不当之处,应实际状况适当的变更钻头直径,本表依据2级牙制订.
    公 制 精 螺 纹
    规格标准径
    2级牙钻孔径
    最大
    最小
    M1.0×0.250.75
    0.785
    0.729
    M1.1×0.250.85
    0.885
    0.829
    M1.2×0.250.95
    0.985
    0.929
    M1.4×0.31.10
    1.142
    1.075
    M1.6×0.351.25
    1.321
    1.221
    M1.7×0.35
    1.35
    1.421
    1.321
    M1.8×0.35
    1.45
    1.521
    1.421
    M2.0×0.4
    1.60
    1.679
    1.567
    M2.2×0.45
    1.75
    1.838
    1.713
    M2.3×0.4
    1.90
    1.979
    1.867
    M2.5×0.45
    2.10
    2.138
    2.013
    M2.6×0.45
    2.20
    2.238
    2.113
    M3.0×0.5
    2.50
    2.599
    2.459
    M3.0×0.6
    2.40
    2.44
    2.280
    M3.5×0.6
    2.90
    3.010
    2.850
    M4.0×0.7
    3.30
    3.422
    3.242
    M4.0×0.75
    3.25
    3.326
    3.106
    M4.5×0.75
    3.80
    3.878
    3.688
    M5.0×0.8
    4.20
    4.334
    4.134
    M5.0×0.9
    4.10
    4.170
    3.930
    M6.0×1.0
    5.00
    5.153
    4.917
    M7.0×1.0
    6.00
    6.153
    5.917
    M8.0×1.25
    6.80
    6.912
    6.647
    M9.0×1.25
    7.80
    7.912
    7.647
    M10×1.5
    8.50
    8.676
    8.376
    M11×1.5
    9.50
    9.676
    9.376
    M12×1.75
    10.30
    10.441
    10.106
    M14×2.0
    12.00
    12.210
    11.735
    M16×2.0
    14.00
    14.210
    13.835
    M18×2.5
    15.50
    15.744
    15.294
    M20×2.5
    17.50
    17.744
    17.294
    M22×2.5
    19.50
    19.744
    19.294
    M24×3.0
    21.00
    21.252
    2.752
    M27×3.0
    24.00
    24.252
    23.752
    M30×3.5
    26.50
    26.771
    26.211

    公 制 细 螺 纹
    规格标准径
    2级牙钻孔径
    最大
    最小
    M1.0×0.20.80
    0.821
    0.783
    M1.1×0.20.90
    0.921
    0.883
    M1.2×0.21.00
    1.021
    0.983
    M1.4×0.21.20
    1.221
    0.183
    M1.6×0.21.40
    1.421
    1.383
    M1.7×0.2
    1.45
    1.500
    1.460
    M1.8×0.2
    1.60
    1.621
    1.583
    M2.0×0.25
    1.75
    1.785
    1.729
    M2.2×0.25
    1.95
    1.985
    1.929
    M2.3×0.25
    2.05
    2.061
    2.001
    M2.5×0.35
    2.20
    2.221
    2.121
    M2.6×0.35
    2.20
    2.246
    2.186
    M3.0×0.35
    2.70
    2.721
    2.621
    M3.5×0.35
    3.20
    3.221
    3.121
    M4.0×0.5
    3.50
    3.599
    3.459
    M4.5×0.5
    4.00
    4.099
    3.959
    M5×0.5
    4.50
    4.599
    4.459
    M5.5×0.5
    5.00
    5.099
    4.959
    M6.0×0.75
    5.30
    5.378
    5.188
    M6.0×0.5
    5.50
    5.550
    5.400
    M7.0×0.75
    6.30
    6.378
    61.88
    M7.0×0.5
    6.50
    6.550
    64.00
    M8.0×1.0
    7.00
    7.153
    6.917
    M8.0×0.75
    7.30
    7.378
    7.188
    M8×0.5
    7.50
    7.520
    7.400
    M9×1.0
    8.00
    8.153
    7.917
    M9×0.75
    8.30
    8.378
    8.188
    M10×1.25
    8.80
    8.912
    8.647
    M10×1.0
    9.00
    9.153
    8.917
    M10×0.75
    9.30
    9.378
    9.188
    M10×0.5
    9.50
    9.520
    9.400
    M11×1.0
    10.00
    10.153
    9.917
    M11×0.75
    10.30
    10.378
    10.188
    M11×1.5
    10.50
    10.676
    10.376
    M12×1.25
    10.80
    10.912
    10.647

    公 制 细 螺 纹
    规格标准径
    2级牙钻孔径
    最大
    最小
    M12×1.011.00
    11.153
    10.917
    M12×0.511.50
    11.520
    11.4
    M14×1.512.50
    12.676
    12.376
    M14×1.013.00
    13.153
    12.917
    M15×1.513.50
    13.676
    13.376
    M15×1.0
    14.00
    14.153
    13.917
    M16×1.5
    14.50
    14.676
    14.376
    M16×1.0
    15.00
    15.153
    14.917
    M17×1.5
    15.50
    15.676
    15.376
    M17×1.0
    16.00
    16.153
    15.917
    M18×2.0
    16.00
    16.210
    15.835
    M18×1.5
    16.50
    16.670
    16.376
    M18×1.0
    17.00
    17.153
    16.917
    M20×2.0
    18.00
    18.210
    17.835
    M20×1.5
    18.50
    18.676
    18.376
    M20×1.0
    19.00
    19.153
    18.917
    M20×2.0
    20.00
    20.210
    19.835
    M22×1.5
    20.50
    20.676
    20.376
    M22×1.0
    21.00
    21.153
    20.917
    M24×2.0
    22.00
    22.210
    21.835
    M24×1.5
    22.50
    22.676
    22.376
    M24×1.0
    23.00
    23.153
    22.917
    M25×2.0
    23.00
    23.210
    22.835
    M25×1.5
    23.50
    23.676
    23.376
    M25×1.0
    24.00
    24.153
    23.917
    M26×1.5
    24.50
    24.676
    24.376
    M27×2.0
    25.00
    25.210
    24.835
    M27×1.5
    25.50
    25.676
    25.376
    M27×1.0
    26.00
    26.153
    25.917
    M28×2.0
    26.00
    26.210
    25.835
    M28×1.5
    26.50
    26.676
    26.376
    M28×1.0
    27.00
    27.153
    26.917
    M30×3.0
    27.00
    27.252
    26.752
    M30×2.0
    28.00
    28.210
    27.835
    M30×1.5
    28.50
    28.676
    28.376
    M30×1.0
    29.00
    29.153
    28.917
    M32×2.0
    30.00
    30.210
    29.835
    M32×1.5
    30.50
    30.676
    30.376
    M33×3.0
    30.00
    30.252
    29.752
    M33×2.0
    31.00
    31.210
    30.835
    M33×1.5
    31.50
    31.376
    31.376
    M35×1.5
    33.50
    33.676
    33.376
    M36×3.0
    33.00
    33.252
    32.752
    M36×2.0
    34.00
    34.210
    33.835
    M36×1.5
    34.50
    34.676
    34.376

    美 制 细 螺 纹
    规格(UNF)标准径
    2级牙钻孔径
    最大
    最小
    番数牙外径

    NO.0-80(1.524)
    1.25
    1.305
    1.182
    NO.1-72(1.854)
    1.55
    1.612
    1.474
    NO.2-64(2.184)
    1.85
    1.912
    1.756
    NO.3-56(2.515)
    2.10
    2.197
    2.025
    NO.4-48(2.845)
    2.40
    2.458
    2.271
    NO.5-44(3.175)2.702.7402.551
    NO.6-40(3.505)2.903.0222.820
    NO.8-36(4.166)3.503.6063.404
    NO.10-32(4.826)4.104.1653.963
    NO.12-28(5.846)4.604.7244.496
    1/4 -285.505.5885.360
    5/16 -246.907.0356.782
    3/8 -248.508.6368.382
    7/16 -209.9010.0339.729
    1/2 -2011.5011.60711.329
    9/16 -1812.9013.08112.751
    5/8 -1814.5014.68114.351
    3/4 -1617.5014.67817.323
    7/8 -1420.5020.67520.270
    1 -1223.2023.57123.114
    1-1/8 -12
    26.50
    26.74626.289
    1-1/4 -12
    29.50
    29.92129.464
    1-3/8 -12
    32.80
    33.09632.464
    1-1/2 -12
    36.00
    36.27035.814

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    无 屑 丝 攻 钻 孔 径
    规格
    精度等级
    RH4.5.6
    RH7.8
    RH9
    M1.0×0.250.86
    0.88
    -
    M1.1×0.250.96
    0.98
    -
    M1.2×0.251.06
    1.08
    -
    M1.4×0.31.24
    1.25
    -
    M1.6×0.351.41
    1.43
    -
    M1.7×0.35
    1.51
    1.53
    -
    M1.8×0.35
    1.61
    1.63
    -
    M2.0×0.4
    1.78
    1.80
    -
    M2.2×0.45
    1.95
    1.98
    -
    M2.3×0.4
    2.08
    2.10
    -
    M2.5×0.45
    2.25
    2.28
    -
    M2.6×0.45
    2.35
    1.38
    -
    M3.0×0.5
    2.73
    2.75
    -
    M3.0×0.6
    3.17
    3.20
    -
    M4.0×0.7
    3.62
    3.65
    3.69
    M5.0×0.8
    4.56
    4.60
    4.64
    M6.0×1.0
    5.45
    5.50
    5.55
    M7.0×1.0
    6.45
    6.50
    6.55
    M8.0×1.25
    7.31
    7.38
    7.44
    M10×1.5
    9.18
    9.25
    9.32
    M10×1.25
    9.31
    9.38
    9.44
    M12×1.75
    11.04
    11.12
    11.21
    M12×1.25
    11.31
    11.38
    11.44
    注:无槽丝攻之钻孔径,在上表所列之数值,由于被加工材料之材质、硬度、形状、尺寸等之影响,多少会有所变动,因此参考上表之同时,亦请增减若干.


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    美 制 管 螺 纹
    规格(UNEF)标准径
    2级牙钻孔径
    最大
    最小
    NO.12 -324.704.8264.623
    1/4 -325.605.6905.486
    5/16 -327.107.2647.087
    3/8 -328.708.8658.661
    7/16 -2810.2010.33810.135
    1/2 -2811.8011.93811.709
    9/16 -2813.2013.38613.132
    5/8 -2414.8014.98614.732
    3/4 -2017.8017.95817.678
    7/8 -2021.0021.13320.853
    1 -2024.0024.30824.028

    美 制 粗 螺 纹
    规格(UNC)标准径
    2级牙钻孔径
    番数牙外径
    最大
    最小
    NO.1-64(1.854)1.55
    1.582
    1.425
    NO.2-56(2.184)1.80
    1.871
    1.695
    NO.3-48(2.515)2.10
    2.146
    1.941
    NO.4-40(2.845)2.30
    2.385
    2.157
    NO.5-40(3.175)2.60
    2.697
    2.487
    NO.6-32(3.505)2.80
    2.895
    2.642
    NO.8-32(4.166)3.403.5303.302
    NO.10-24(4.826)3.903.9623.682
    NO.12-24(5.846)4.504.5974.344
    1/4 -205.105.2574.979
    5/16 -186.606.7316.401
    3/8 -168.008.1537.987
    7/16 -149.409.5009.144
    1/2 -1310.8011.02310.592
    9/16 -1212.2012.44611.989
    5/8 -1113.6012.86813.386
    3/4 -1016.2016.84016.307
    7/8 -919.5019.76119.177
    1 -822.2022.60621.971
    1-1/8 -725.0025.34924.638
    1-1/4 -728.2028.52427.813
    1-3/8 -6
    30.80
    31.11530.353
    1-1/2 -6
    34.00
    34.29033.528
    1-3/4 -5
    39.50
    39.82738.964
    2 -4-1/2
    45.20
    45.59344.679


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    英 制 螺 纹
    规格
    钻孔径
    硬材
    软材
    W1/8 - 40
    2.65
    2.60
    W5/32 - 32
    3.25
    3.20
    W3/16 - 24
    3.75
    3.70
    W1/4 - 20
    5.10
    5.00
    W5/16 - 18
    6.60
    6.50
    W3/8 - 16
    8.00
    7.90
    W7/16 - 14
    9.40
    9.30
    W1/2 - 12
    10.70
    10.50
    W9/16 - 12
    12.30
    12.00
    W5/8 - 11
    13.70
    13.50
    W3/4 - 10
    16.70
    16.50
    W7/8 - 9
    19.50
    19.30
    W1 - 8
    22.40
    22.00
    W1-1/8 - 7
    25.00
    24.80
    W1-1/4 - 7
    28.30
    28.00

    英 制 管 螺 纹
    规格标准径
    钻 孔 径
    最大
    最小
    PS1/16 -286.506.632
    6.490
    PS1/8 -288.508.637
    8.495
    PS1/4 - 1911.4011.549
    11.341
    PS3/8 - 1915.0015.054
    14.846
    PS1/2 - 1418.5018.773
    18.489
    PS3/4 - 1424.0024.259
    23.975
    PS1 - 1130.2030.471
    30.111
    PS1-1/4 -1138.8039.132
    38.772
    PS1-1/2 -1144.8045.025
    44.665
    PS2 - 1156.5056.836
    56.476

    英 制 管 螺 纹
    规格
    标准径
    有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径
    使用绞刀时
    不用绞刀时
    PT1/16 -286.10
    6.2
    6.244
    6.384
    PT1/8 -288.10
    8.2
    8.249
    8.388
    PT1/4 -1910.70
    11
    10.962
    11.174
    PT3/8 -1914.20
    14.5
    14.448
    14.658
    PT1/2 -1417.60
    18
    17.979
    18.263
    PT3/4 -14
    23.00
    23.5
    23.378
    23.663
    Pt1 -11
    29.00
    29.5
    29.459
    29.822
    PT1-1/4 -11
    37.50
    38
    37.976
    38.339
    PT1-1/2 -11
    43.40
    44
    43.869
    44.232
    Pt2 -11
    54.90
    55.5
    55.412
    55.844

    美 制 螺 纹 滚 造 径
    规格钻孔径
    NPTNPS
    使用绞刀时
    不用绞刀时
    1/16 -276.16.256.35
    1/8 -278.338.438.74
    1/4 -1810.7211.1311.13
    3/8 -18
    14.27
    14.2714.68
    1/2 -1417.4817.8618.26
    3/4 -1422.6323.0123.42
    1 -11-1/228.5828.9829.36
    1-1/4-11-1/237.3137.6938.1
    1-1/2-11-1/243.6644.0444.45
    2 -11-1/255.5855.9656.36

    英 制 螺 纹 滚 造 径
    规格
    滚造径
    W 3/16 - 24
    4.08 - 4.05
    W 1/4 - 20
    5.51 - 5.46
    W 5/16 - 18
    7.01 - 6.95
    W 3/8 - 16
    8.48 - 8.41
    W 7/16 - 14
    9.92 - 9.85
    W 1/2 - 12
    11.31 - 11.24
    W 9/16 -12
    12.89 - 12.82
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    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    [tr][/tr]
    公 制 螺 纹
    规格滚造径
    M3.0×0.5
    2.63 2.60
    M3.0×0.6
    2.56 2.53
    M3.5×0.6
    3.06 3.03
    M4.0×0.7
    3.49 3.45
    M4.0×0.75
    3.45 3.41
    M4.5×0.75
    3.96 3.92
    M5.0×0.8
    4.43 4.38
    M5.0×0.9
    4.36 4.31
    M6.0×1.0
    5.30 5.25
    M7.0×1.0
    6.30 6.25
    M8.0×1.0
    7.28 - 7.23
    M8.0×1.25
    7.12 - 7.07
    M9.0×1.25
    8.12 - 8.07
    M10×1.25
    9.10 - 9.04
    M10×1.5
    8.97 - 8.91
    M11×1.5
    9.97 - 9.91
    M12×1.5
    10.92 - 10.87
    M12×1.75
    10.79 - 10.73
    M14×2.0
    12.63 - 12.56
    M16×2.0
    14.63 - 14.56
    M18×2.5
    16.31 - 16.23
    M20×2.5
    18.31 - 18.23
    M22×2.5
    20.31 - 20.23

    针 车 用 螺 纹
    规格(UNC)
    滚造径
    SM 1/8 402.735 -2.688
    SM 1/8 442.769 -2.722
    SM 9/64 403.128 -3.083
    SM 11/64 403.855 -3.805
    SM 3/16 324.205 -4.155
    SM 3/16 28
    4.143 -4.093
    SM 7/32 32
    5.003 -4.955
    SM 15/64 28
    5.325 -4.955
    SM 1/4 40
    5.890 -5.735
    SM 1/4 28
    5.721 -5.366
    SM 9/32 28
    6.528 -6.648
    SM 11/32 28
    8.092 -8.432
    SM 3/8 29
    8.880 -8.015
    SM 7/16 30
    10.466 -10.401
    SM 7/16 16
    10.037 -9.967
    SM 1/2 2011.819 -11.749
    SM 9/16 2013.400 -13.425

    美 制 粗 螺 纹
    规格(UNC)
    滚造径
    NO.5-40
    2.70 - 2.67
    NO.6-32
    2.95 - 2.91
    NO.8-32
    3.60 - 3.57
    NO.10-24
    4.09 - 4.05
    NO.12-24
    4.75 - 4.70
    1/4 -20
    5.50 - 5.45
    5/16 -18
    6.98 - 6.93
    3/8 -16
    8.45 - 8.40
    7/16 -14
    9.89 - 9.83
    1/2 -13
    11.39 - 11.32
    9/16 -12
    12.87 - 12.80





    [tr][/tr]
    [tr][/tr]
    美 制 细 螺 纹
    规格(UNF)
    滚造径
    NO.5-44
    2.73 - 2.70
    NO.6-40
    3.05 - 3.02
    NO.8-36
    3.66 - 3.63
    NO.10-32
    4.26 - 4.80
    NO.12-28
    4.84 - 4.80
    1/4 -28
    5.72 - 5.68
    5/16 -24
    7.20 - 7.16
    3/8 -24
    8.79 - 8.74
    7/16 -20
    10.23 - 10.18
    1/2 -20
    11.82 - 11.76



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