螺丝攻牙钻孔径和滚造径对照表

1、公制粗螺纹规格标准径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 0.985 M1.4×0.31.10 1.142 1.075 M1.6×0.351.25 1.321 1.221 M1.7×0.351.35 1.421 1.321 M1.8×0.351.45 1.521 1.421 M2.0×0.41.60 1.679 1.567 M2.2×0.451.75 1.838 1.713 M2.

2、3×0.41.90 1.979 1.867 M2.5×0.452.10 2.138 2.013 M2.6×0.452.20 2.238 2.113 M3.0×0.52.50 2.599 2.459 M3.0×0.62.40 2.440 2.280 M3.5×0.62.90 3.010 2.850 M4.0×0.73.30 3.422 3.242 M4.0×0.753.25 3.326 3.106 M4.5×0.753.80 3.878 3.688 M5.0×0.84.20 4.334 4.134

3、 M5.0×0.94.10 4.170 3.930 M6.0×1.05.00 5.153 4.917 M7.0×1.06.00 6.153 5.917 M8.0×1.256.80 6.912 6.647 M9.0×1.257.80 7.912 7.647 M10×1.58.50 8.676 8.376 M11×1.59.50 9.676 9.376 M12×1.7510.30 10.441 10.106 M14×2.012.00 12.210 11.835 M16×2.014.00 14.210

4、 13.835 M18×2.515.50 15.744 15.294 M20×2.517.50 17.744 17.294 M22×2.519.50 19.744 19.294 M24×3.021.00 21.252 20.752 M27×3.024.00 24.252 23.752 M30×3.526.50 26.771 26.211 ·  ·  ·  美制粗螺纹规格（UNC）标准径2级牙钻孔径最大最小NO.1-64(1.854)1.55 1.5821.425NO.2-56

5、(2.184)1.80 1.8711.695NO.3-48(2.515)2.10 2.1461.941NO.4-40(2.845)2.30 2.3852.157NO.5-40(3.175)2.60 2.6972.487NO.6-32(3.505)2.80 2.8952.642NO8-32(4.166)3.40 3.533.302NO.10-24(4.826)3.90 3.9623.683NO.12-24(5.486)4.50 4.5974.3441/4-205.10 5.2574.9795/16-186.60 6.7316.4013/8-168.00 8.1537.7987/16-149.40

6、 9.559.1441/2-1310.80 11.02310.5929/16-1212.20 12.44611.9895/8-1113.60 12.86813.3863/4-1016.50 18.840 16.3077/8-919.50 19.761 19.177122.20 22.606 21.9711-1/8-725.00 25.349 24.6381-1/4-728.20 28.524 27.8131-3/8-630.80 31.115 30.3531-1/2-634.00 34.290 33.5281-3/4-539.50 39.827 38.9642-4-1/245.20 45.59

7、3 44.679·  ·  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 0.8210.783M1.1×0.20.90 0.9210.883M1.2×0.21.00 1.0210.983M1.4×0.21.20 1.2211.183M1.6×0.21.40 1.4211.383M1.7×0.21.45 1.500 1.460 M1.8×0.21.60 1.621 1.583 M2.0×0.251.75 1.785 1.729 M2.2×0.251

8、.95 1.985 1.929 M2.3×0.252.05 2.061 2.001 M2.5×0.352.20 2.221 2.121 M2.6×0.352.20 2.246 2.186 M3.0×0.352.70 2.721 2.621 M3.5×0.353.20 3.221 3.121 M4.0×0.53.50 3.599 3.459 M4.5×0.54.00 4.099 3.959 M5.0×0.54.50 4.599 4.459 M5.5×0.55.00 5.099 4.959 M6.0×

9、;0.755.30 5.378 5.188 M6.0×0.55.50 5.550 5.400 M7.0×0.756.30 6.378 6.188 M7.0×0.56.50 6.550 6.400 M8.0×1.07.00 7.153 6.917M8.0×0.757.30 7.378 7.188M8.0×0.57.50 7.520 7.400 M9.0×1.08.00 8.153 7.917 M9.0×0.758.30 8.378 8.188 M10×1.258.80 8.912 8.647 M10

10、5;1.09.00 9.153 8.917 M10×0.759.30 9.378 9.188 M10×0.59.50 9.520 9.400 M11×1.010.00 10.153 9.917 M11×0.7510.30 10.378 10.188 M12×1.510.50 10.676 10.376 M12×1.2510.80 10.912 10.647 M12×1.011.00 11.153 10.917 M12×0.511.50 11.520 11.400 M14×1.512.50 12.676 1

11、2.376 M14×1.013.00 13.153 12.917 M15×1.513.50 13.676 13.376 M15×1.014.00 14.153 13.917 M16×1.514.50 14.676 14.376 M16×1.015.00 15.153 14.917 M17×1.515.50 15.676 15.376 M17×1.016.00 16.153 15.917 M18×2.016.00 16.210 15.835 M18×1.516.50 16.676 16.376 M18

12、15;1.017.00 17.153 16.917 M20×2.018.00 18.210 17.835 M20×1.518.50 18.676 18.376 M20×1.019.00 19.153 18.917 M22×2.020.00 20.210 19.835 M22×1.520.50 20.676 20.376 M22×1.021.00 21.153 20.917 M24×2.022.00 22.210 21.835 M24×1.522.50 22.676 22.376 M24×1.023.00

13、23.153 22.917 M25×2.023.00 23.210 22.835 M25×1.523.50 23.676 23.376 M25×1.024.00 24.153 23.917 M26×1.524.50 24.676 24.376 M27×2.025.00 25.210 24.835 M27×1.525.50 25.676 25.376 M27×1.026.00 26.153 25.917 M28×2.026.00 26.210 25.835 M28×1.526.50 26.676 26.37

14、6 M28×1.027.00 27.15326.917M30×3.027.00 27.25226.752M30×2.028.00 28.210 27.835M30×1.528.50 28.676 28.376M30×1.029.00 29.153 28.917M32×2.030.00 30.210 29.835M32×1.530.50 30.676 30.376M33×3.030.00 30.252 29.752M33×2.031.00 31.210 30.835M33×1.531.50 31.

15、676 31.376M35×1.533.50 33.676 33.376M36×3.033.00 33.252 32.752M36×2.034.00 34.210 33.835M36×1.534.50 34.676 34.376·   美制细螺纹规格（UNC）标准径2级牙钻孔径最大最小NO.0-80(1.524)1.25 1.3051.182NO.1-72(1.854)1.55 1.6121.474NO.2-64(2.184)1.85 1.9121.756NO.3-56(2.515)2.10 2.1972.025NO.4-4

16、8(2.845)2.40 2.4582.271NO.5-44(3.175)2.70 2.740 2.551NO.6-40(3.505)2.90 3.022 2.820 NO.8-36(4.166)3.50 3.606 3.404 NO.10-32(4.826)4.10 4.165 3.963 NO.12-28(5.846)4.60 4.724 4.496 1/4-285.50 5.588 5.360 5/16-246.90 7.035 6.782 3/8-248.50 8.636 8.382 7/16-209.90 10.033 9.729 1/2-2011.50 11.607 11.329

17、9/16-1812.90 13.081 12.751 5/8-1814.50 14.681 14.351 3/4-1617.50 17.678 17.323 7/8-1420.50 20.675 20.270 1-1223.20 23.571 23.114 1-1/8-1226.50 26.746 26.289 1-1/4-1229.50 29.921 29.464 1-3/8-1232.80 33.09632.6391-1/2-1236.00 36.27135.814 公制迫牙丝攻钻孔径规格精度等级G4-G6G7-G8G9M1.0×0.250.860.88M1.1

18、5;0.250.960.98M1.2×0.251.061.08M1.4×0.31.241.25M1.6×0.351.411.43M1.7×0.351.511.53M1.8×0.351.611.63M2.0×0.41.781.80 M2.2×0.451.951.98 M2.3×0.42.082.10 M2.5×0.452.252.28 M2.6×0.452.352.38 M3.0×0.52.732.75 M3.5×0.63.173.20 M4.0×0.73.623.6

19、5 3.69M5.0×0.84.564.60 4.64M6.0×1.05.455.50 5.55M7.0×1.06.456.50 6.55M8.0×1.257.317.38 7.44M10×1.59.189.25 9.32M10×1.259.319.38 9.44M12×1.7511.0411.12 11.21M12×1.2511.3111.38 11.44美制迫牙丝攻钻孔径规格精度等级G4-G6G7-G8G9NO.2-56UNC1.94 NO.3-482.23 NO.4-402.50 NO.5-402.83 NO

20、.6-323.07 NO.8-323.73 3.77NO.10-244.24 4.3NO.12-244.90 4.961/4-205.725/16-187.243/8-168.748.817/16-1410.20 10.30 1/2-1311.27 11.82NO.2-64UNF1.97 NO.3-562.27 NO.4-482.56 NO.5-442.86 NO.6-403.16 NO.8-363.78 NO.10-324.39 4.43 NO.12-284.99 5.04 1/4-285.85 5.90 5/16-247.36 7.41 3/8-249.00 7/16-2010.48 10

21、.541/2-2012.07 12.13 美制特细螺纹规格(UNEF)标准径2级牙钻孔径最大最小NO.12-324.70 4.826 4.623 1/4 -325.60 5.690 5.486 5/16 -327.10 7.264 7.087 3/8 -328.70 8.865 8.661 7/16 -2810.20 10.338 10.135 1/2 -2811.80 11.938 11.709 9/16 -2413.20 13.386 13.132 5/8 -2414.80 14.986 14.732 3/4 -2017.80 17.958 17.678 7/8 -2021.00

22、 21.133 20.853 1 -2024.00 24.308 24.028 ·  英制电器螺纹规格钻孔径2BA3BA4BA5BA6BA英制管螺纹规格标准径钻孔径最大最小PS 1/16 - 286.50 6.6326.490 PS 1/8 - 288.50 8.6378.495 PS 1/4 - 1911.40 11.54911.341 PS 3/8 - 1915.00 15.05414.846 PS 1/2 - 1418.50 18.77318.489 PS 3/4 -1424.00 24.25923.975 PS 1 - 1130.20 30.47130.111 PS

23、 1-1/4 - 1138.80 39.13238.772 PS 1-1/2 - 1144.80 45.02544.665 PS 2 - 1156.50 56.83656.476  英制管螺纹规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）中之毋螺牙内径使用纹刀时不用纹刀时PT 1/16 - 286.10 6.20 6.2446.384PT 1/8 - 288.10 8.20 8.2498.388PT 1/4 - 1910.70 11.00 10.96211.174PT 3/8 - 1914.20 14.50 14.44814.658PT 1/2 - 1417.60 1

24、8.00 17.97918.263PT 3/4 - 1423.00 23.50 23.37823.663PT 1- 1129.00 29.50 29.45929.822PT 1-1/4 - 1137.50 38.00 37.97638.339PT 1-1/2 - 1143.40 44.00 43.86944.232PT 2 - 1154.90 55.50 55.41255.844·  美制管螺纹规格钻孔径NPTNPS使用绞刀时不用绞刀时1/16 - 276.10 6.25 6.35 1/8 - 278.33 8.43 8.74 1/4 - 1810.72 11.13 11.13 3/8 - 1814.27 14.27 14.68 1/2 - 1417.48 17.86 18.26 3/4 - 1422.63 23.01