螺丝攻牙钻孔径和滚丝径对照表

1、螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.250.750.7850.729NO.1-64(1.854)1.551.5821.425M1.1×0.250.850.8850.829NO.2-56(2.184)1.801.8711.695M1.2×0.250.950.9850.985NO.3-48(2.515)2.102.1461.941M1.4×0.31.101.1421.075NO.4-40(2.845)2.302.3852.157M1.6×0.351.25

2、1.3211.221NO.5-40(3.175)2.602.6972.487M1.7×0.351.351.4211.321NO.6-32(3.505)2.802.8952.642M1.8×0.351.451.5211.421NO8-32(4.166)3.403.533.302M2.0×0.41.601.6791.567NO.10-24(4.826)3.903.9623.683M2.2×0.451.751.8381.713NO.12-24(5.486)4.504.5974.344M2.3×0.41.901.9791.8671/4-205.105.

3、2574.979M2.5×0.452.102.1382.0135/16-186.606.7316.401M2.6×0.452.202.2382.1133/8-168.008.1537.798M3.0×0.52.502.5992.4597/16-149.409.559.144M3.0×0.62.402.4402.2801/2-1310.8011.02310.592M3.5×0.62.903.0102.8509/16-1212.2012.44611.989M4.0×0.73.303.4223.2425/8-1113.6012.86813.

4、386M4.0×0.753.253.3263.1063/4-1016.5018.84016.307M4.5×0.753.803.8783.6887/8-919.5019.76119.177M5.0×0.84.204.3344.134122.2022.60621.971M5.0×0.94.104.1703.9301-1/8-725.0025.34924.638M6.0×1.05.005.1534.9171-1/4-728.2028.52427.813M7.0×1.06.006.1535.9171-3/8-630.8031.11530.3

5、53M8.0×1.256.806.9126.6471-1/2-634.0034.29033.528M9.0×1.257.807.9127.6471-3/4-539.5039.82738.964M10×1.58.508.6768.3762-4-1/245.2045.59344.679M11×1.59.509.6769.376M12×1.7510.3010.44110.106M14×2.012.0012.21011.835M16×2.014.0014.21013.835M18×2.515.5015.74415.294M

6、20×2.517.5017.74417.294M22×2.519.5019.74419.294M24×3.021.0021.25220.752M27×3.024.0024.25223.752M30×3.526.5026.77126.211 签名档：螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.20.800.8210.783NO.0-80(1.524)1.251.3051.182M1.1×0.20.900.9210.883NO.1-

7、72(1.854)1.551.6121.474M1.2×0.21.001.0210.983NO.2-64(2.184)1.851.9121.756M1.4×0.21.201.2211.183NO.3-56(2.515)2.102.1972.025M1.6×0.21.401.4211.383NO.4-48(2.845)2.402.4582.271M1.7×0.21.451.5001.460NO.5-44(3.175)2.702.7402.551M1.8×0.21.601.6211.583NO.6-40(3.505)2.903.0222.820M2

8、.0×0.251.751.7851.729NO.8-36(4.166)3.503.6063.404M2.2×0.251.951.9851.929NO.10-32(4.826)4.104.1653.963M2.3×0.252.052.0612.001NO.12-28(5.846)4.604.7244.496M2.5×0.352.202.2212.1211/4-285.505.5885.360M2.6×0.352.202.2462.1865/16-246.907.0356.782M3.0×0.352.702.7212.6213/8-248

9、.508.6368.382M3.5×0.353.203.2213.1217/16-209.9010.0339.729M4.0×0.53.503.5993.4591/2-2011.5011.60711.329M4.5×0.54.004.0993.9599/16-1812.9013.08112.751M5.0×0.54.504.5994.4595/8-1814.5014.68114.351M5.5×0.55.005.0994.9593/4-1617.5017.67817.323M6.0×0.755.305.3785.1887/8-1420

10、.5020.67520.270M6.0×0.55.505.5505.4001-1223.2023.57123.114M7.0×0.756.306.3786.1881-1/8-1226.5026.74626.289M7.0×0.56.506.5506.4001-1/4-1229.5029.92129.464M8.0×1.07.007.1536.9171-3/8-1232.8033.09632.639M8.0×0.757.307.3787.1881-1/2-1236.0036.27135.814M8.0×0.57.507.5207.400

11、M9.0×1.08.008.1537.917M9.0×0.758.308.3788.188M10×1.258.808.9128.647M10×1.09.009.1538.917M10×0.759.309.3789.188M10×0.59.509.5209.400螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M11×1.010.0010.1539.917M11×0.7510.3010.37810.188M12×1.510.5010.67

12、610.376M12×1.2510.8010.91210.647M12×1.011.0011.15310.917M12×0.511.5011.52011.400M14×1.512.5012.67612.376M14×1.013.0013.15312.917M15×1.513.5013.67613.376M15×1.014.0014.15313.917M16×1.514.5014.67614.376M16×1.015.0015.15314.917M17×1.515.5015.67615.376M1

13、7×1.016.0016.15315.917M18×2.016.0016.21015.835M18×1.516.5016.67616.376M18×1.017.0017.15316.917M20×2.018.0018.21017.835M20×1.518.5018.67618.376M20×1.019.0019.15318.917M22×2.020.0020.21019.835M22×1.520.5020.67620.376M22×1.021.0021.15320.917M24×2.0

14、22.0022.21021.835M24×1.522.5022.67622.376M24×1.023.0023.15322.917M25×2.023.0023.21022.835M25×1.523.5023.67623.376M25×1.024.0024.15323.917M26×1.524.5024.67624.376M27×2.025.0025.21024.835M27×1.525.5025.67625.376M27×1.026.0026.15325.917M28×2.026.0026.21

15、025.835M28×1.526.5026.67626.376M28×1.027.0027.15326.917M30×3.027.0027.25226.752M30×2.028.0028.21027.835M30×1.528.5028.67628.376M30×1.029.0029.15328.917M32×2.030.0030.21029.835M32×1.530.5030.67630.376M33×3.030.0030.25229.752M33×2.031.0031.21030.835M33

16、×1.531.5031.67631.376M35×1.533.5033.67633.376M36×3.033.0033.25232.752M36×2.034.0034.21033.835M36×1.534.5034.67634.376 签名档：   螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格（UNC）精度等级G4-G6G7-G8G9G4-G6G7-G8G9M1.0×0.250.860.88NO.2-56UNC1.94M1.1×0.250.960.98NO.3

17、-482.23M1.2×0.251.061.08NO.4-402.50M1.4×0.31.241.25NO.5-402.83M1.6×0.351.411.43NO.6-323.07M1.7×0.351.511.53NO.8-323.733.77M1.8×0.351.611.63NO.10-244.244.3M2.0×0.41.781.80NO.12-244.904.96M2.2×0.451.951.981/4-205.72M2.3×0.42.082.105/16-187.24M2.5×0.452.252.

18、283/8-168.748.81M2.6×0.452.352.387/16-1410.2010.30M3.0×0.52.732.751/2-1311.2711.82M3.5×0.63.173.20NO.2-64UNF1.97M4.0×0.73.623.653.69NO.3-562.27M5.0×0.84.564.604.64NO.4-482.56M6.0×1.05.455.505.55NO.5-442.86M7.0×1.06.456.506.55NO.6-403.16M8.0×1.257.317.387.44NO.

19、8-363.78M10×1.59.189.259.32NO.10-324.394.43M10×1.259.319.389.44NO.12-284.995.04M12×1.7511.0411.1211.211/4-285.855.90M12×1.2511.3111.3811.445/16-247.367.413/8-249.007/16-2010.4810.541/2-2012.0712.13     签名档：  美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小NO.12-324.

20、704.8264.6232BA1/4     -325.605.6905.4863BA5/16   -327.107.2647.0874BA3/8    -328.708.8658.6615BA7/16   -2810.2010.33810.1356BA1/2     -2811.8011.93811.7099/16    -2413.2013.38613.1325/8    -2414

21、.8014.98614.7323/4    -2017.8017.95817.6787/8    -2021.0021.13320.8531      -2024.0024.30824.028 签名档：     螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF)钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 - 402.652.60M3×0.5SM1/8-40W 5/32 - 323.253.20M3.0×0

22、.6SM1/8-44W 3/16 - 243.753.70M3.5×0.6SM9/64-40W 1/4 - 205.105.00M4.0×0.7SM11/64-40W 5/16 - 186.606.50M4.0×0.75SM3/16-32W 3/8 - 168.007.90M4.5×0.75SM3/16-28W 7/16 - 149.409.30M5.0×0.8SM7/32-32W 1/2 - 1210.7010.50M5.0×0.9SM15/64-28W 9/16 - 1212.3012.00M6.0×1.0SM

23、1/4-40W 5/8 - 1113.7013.50M7.0×1.0SM1/4-28W 3/4 - 1016.7016.50M8.0×1.0SM9/32-28W 7/8 - 919.5019.30M8.0×1.25SM11/32-28W1 - 822.4022.00SM3/8-28W 1-1/8 - 725.0024.80SM7/16-28W 1 - 1/4 - 728.3028.00SM7/16-16SM1/2-20SM9/26-20    签名档：   英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径规

24、格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPTNPS使用绞刀时不用绞刀时PS 1/16 - 286.506.6326.490PT 1/16 - 286.106.206.2446.3841/16 - 276.106.256.35PS 1/8 - 288.508.6378.495PT 1/8 - 288.108.208.2498.3881/8 - 278.338.438.74PS 1/4 - 1911.4011.54911.341PT 1/4 - 1910.7011.0010.96211.1741/4 - 1810.7211.1311.13PS 3/8 - 1915.0015.05414.846PT 3/8 - 1914.2014.5014.44814.6583/8 - 1814.2714.2714.68PS 1/2 - 1418.5018.77318.489PT 1/2 - 1417.6018.0017.97