攻牙径对照表(集合版)

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螺丝攻牙径对照表(集合版)

牙径表1

规格 M1× 0.25 M1.1× 0.25 M1.2× 0.25 M1.4× 0.3 M1.6× 0.35 M1.7× 0.35 M1.8× 0.35 M2× 0.4 M.2.2× 0.45 M2.3× 0.4 M2.5× 0.45 M2.6× 0.45 M3× 0.5 M3× 0.6 M3.5× 0.6 M4× 0.7 M4× 0.75 M4.5× 0.75 M5× 0.8 M5× 0.9 M6× 1 M7× 1 M8× 1.25 M9× 1.25 M10× 1.5 M11× 1.5 M12× 1.75 M14× 2.0 M16× 2.0 M18× 2.5 M20× 2.5 M22× 2.5
美制细螺纹规格 ( UNF )
(番数牙外径）
标准径 1.25 1.55 1.85 2.1 2.4 2.7 2.9 3.5 4.1 4.6 5.5 6.9 8.5 9.9 11.5 12.9 14.5 17.5 20.5 23.2 26.5 29.5 32.8 36
2级牙钻孔径最大最小 1.305 1.612 1.912 2.197 2.458 2.74 3.022 3.606 4.165 4.724 5.588 7.035 8.636 10.033 11.607 13.081 14.681 17.678 20.675 23.571 26.746 29.921 33.096 36.271 1.182 1.474 1.756 2.025 2.271 2.551 2.82 3.404 3.963 4.406 5.36 6.782 8.382 9.729 11.329 12.751 14.351 17.323 20.27 23.114 26.283 29.464 32.639 35.814
公制粗螺纹 2级牙钻孔径标准径最大最小 0.75 0.785 0.729 0.85 0.885 0.829 0.95 0.985 0.929 1.1 1.142 1.075 1.25 1.321 1.221 1.35 1.421 1.321 1.45 1.521 1.421 1.6 1.679 1.667 1.75 1.838 1.731 1.9 1.979 1.867 2.1 2.138 2.013 2.2 2.238 2.113 2.5 2.599 2.159 2.4 2.44 2.28 2.9 3.01 2.85 3.3 3.422 3.242 3.25 3.326 3.106 3.8 3.878 3.688 4.2 4.334 4.134 4.1 4.17 3.93 5 5.153 4.917 6 6.153 5.917 6.8 6.912 6.647 7.8 7.912 7.647 8.5 8.676 8.376 9.5 9.676 9.376 10.3 10.441 10.11 12 12.21 11.84 14 14.21 13.84 15 15.744 15.29 17 17.744 17.29 19.5 19.744 19.29 公制细螺纹规格 M12× 1.0 M12× 0.5 M14× 1.5 M14× 1.0 M15× 1.5 M15× 1.0 M16× 1.5 M16× 1.0 M17× 1.5 M17× 1.0 M18× 2.0 M18× 1.5 M18× 1.0 M20× 2.0 M20× 1.5 M20× 1.0 M22× 2.0 M22× 1.5 M22× 1.0 M24× 2.0 M24× 1.5 M24× 1.0 M25× 2.0 M25× 1.5 M25× 1.0 M26× 1.5 M27× 2.0 M27× 1.5 M27× 1.0 M28× 2.0 M28× 1.5 M28× 1.0 2级牙钻孔径标准径最大最小 11 11.153 10.917 11.5 11.52 11.4 12.5 12.676 12.376 13 13.153 12.917 13.5 13.676 13.376 14 14.153 13.917 14.5 14.676 14.376 15 15.153 14.917 15.5 15.676 15.376 16 16.153 15.917 16 16.21 15.885 16.5 16.676 16.376 17 17.153 16.917 18 18.21 17.885 18.5 18.676 18.376 19 19.153 18.917 20 20.21 19.885 20.5 20.676 20.376 21 21.153 20.917 22 22.21 21.835 22.5 22.676 22.376 23 23.153 22.917 23 23.21 22.885 23.5 23.676 23.876 24 24.153 23.917 24.5 24.676 24.376 25 25.21 24.885 25.5 25.676 25.376 26 26.153 26.917 26 26.21 25.885 26.5 26.676 26.376 27 27.153 26.917 无沟丝攻钻孔径精度待级规格 G4-G6 G7-G8 G9 M1× 0.25 0.86 0.88 ~ M1.1× 0.25 0.96 0.98 ~ M1.2× 0.25 1.06 1.08 ~ M1.4× 0.3 1.24 1.25 ~ M1.6× 0.35 1.41 1.43 ~ M1.7× 0.35 1.51 1.53 ~ M1.8× 0.35 1.61 1.63 ~ M2× 0.4 1.78 1.8 ~ M.2.2× 0.45 1.95 1.98 ~ M2.3× 0.4 2.08 2.1 ~ M2.5× 0.45 2.25 2.28 ~ M2.6× 0.45 2.35 2.38 ~ M3× 0.5 2.73 2.75 ~ M3.5× 0.6 3.17 3.2 ~ M4× 0.7 3.62 3.65 3.69 M5× 0.8 4.56 4.6 4.64 M6× 1 5.15 5.5 5.55 M7× 1 6.45 6.5 6.55 M8× 1.25 7.31 7.38 7.44 M10× 1.5 9.18 9.25 9.32 M10× 1.25 9.31 9.38 9.41 M12× 1.75 11.04 11.12 11.21 M12× 1.25 11.31 11.38 11.41 附：无沟丝攻之钻孔径，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，因此于参考上表之同时，请酌情增减若干。英制螺纹钻孔径规格硬材软材 W1/8-40 2.65 2.6 W5/32-32 3.25 3.2 W3/16-24 3.75 3.7 W1/4-20 5.1 5 W5/16-18 6.6 6.5 W3/8-16 8 7.9 W7/16-14 9.4 9.3 W1/2-12 10.7 10.5 W9/16-12 12.3 12 W5/8-11 13.7 13.5 W3/4-10 16.7 16.5 W7/8-9 19.5 19.3 W1 -8 22.4 22 W1-1/8-7 25 24.8 W1-1/4-7 28.3 28 英制管螺纹代号：G、BSP、PS 规格 1/16-28 1/8-28 1/4-19 3/8-19 1/2-14 3/4-14 1”-11 1-1/4-11 1-1/2-11 2”-11 标准径 6.5 8.5 11.4 15 18.5 24 30.2 38.8 44.8 56.5 钻孔径最大最小 6.632 6.49 8.637 8.495 11.549 11.341 15.054 14.846 18.773 18.489 24.259 23.975 30.471 30.111 39.132 38.772 45.025 44.665 56.836 56.476 美制粗螺纹规格（UNC）滚造径 NO:5-40 2.7~2.67 NO:6-32 2.95~2.91 NO:8-32 3.6~3.57 NO:10-24 4.09~4.05 NO:12-24 4.75~4.7 1/4-20 5.5~5.45 5/16-18 6.98~6.93 3/8-16 8.45~8.4 7/16-14 9.89~9.83 1/2-13 11.39~11.32 9/16-12 12.87~12.8

螺丝攻牙钻孔底径对照表

迫牙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于参考上表之同时亦精增减若干
螺丝攻牙钻孔径和滚造径对照表
时间:201003-02 16:18来源: 未知作者:admin 点击: 143 次
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依抿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.
M1.0*0.2
0.8 0.821 0.783
M1.1*0.2
0.9 0.921 0.883
M1.2*0.2
1 1.021 0.983
M1.4*0.2
1.2 1.221 1.421 1.383
M1.7*0.2
1.45
1.5 1.46
M1.8*0.2
1.6 1.621 1.583
M3.0*0.5 0 M3.0*0.6 0 M3.5*0.6 0 M4.0*0.7 0 M4.0*0.7 5 M4.5*0.7 5 M5.0*0.8 0 M5.0*0.9 0 M6.0*1.0 0 M7.0*1.0 0 M8.0*1.2 5 M9.0*1.2 5 M10*1.50 M11*1.50 M12*1.75 M14*2.00 M16*2.00 M18*2.50 M20*2.50 M22*2.50 M24*3.00 M27*3.00 M30*3.50
--
1/2 - 13
-
No 2 -
64UNF
No 3 - 56
4.9 4.96 -
5.72 -
7.24 -
8.74 8.81
10.2 10.3
11.27 11.82

螺丝攻牙钻孔径和滚造径对照表

螺丝攻牙钻孔径和滚造径对照表
公制细螺纹
规格 M8.0×1.0 M8.0×0.75 M8.0×0.5 M9.0×1.0 M9.0×0.75 M10×1.25 M10×1.0 M10×0.75 M10×0.5 M11×1.0 M11×0.75 M12×1.5 M12×1.25 M12×1.0 M12×0.5 M14×1.5 M14×1.0 M15×1.5 M15×1.0 M16×1.5 M16×1.0 M17×1.5 标准径 7.00 7.30 7.50 8.00 8.30 8.80 9.00 9.30 9.50 10.00 10.30 10.50 10.80 11.00 11.50 12.50 13.00 13.50 14.00 14.50 15.00 15.50 2级牙钻孔径最大最小 7.153 6.917 7.378 7.520 8.153 8.378 8.912 9.153 9.378 9.520 10.153 10.378 10.676 10.912 11.153 11.520 12.676 13.153 13.676 14.153 14.676 15.153 15.676 7.188 7.400 7.917 8.188 8.647 8.917 9.188 9.400 9.917 10.188 10.376 10.647 10.917 11.400 12.376 12.917 13.376 13.917 14.376 14.917 15.376 规格（UNC） 1-3/8-12 1-1/2-12
美制细螺纹
2级牙钻孔径美制细螺纹Fra bibliotek2级牙钻孔径
螺丝攻牙钻孔径和滚造径对照表
公制细螺纹
2级牙钻孔径规格 M28×1.0 M30×3.0 M30×2.0 M30×1.5 M30×1.0 M32×2.0 M32×1.5 M33×3.0 M33×2.0 M33×1.5 M35×1.5 M36×3.0 M36×2.0 M36×1.5 标准径最大 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.50 33.00 34.00 34.50 27.153 27.252 28.210 28.676 29.153 30.210 30.676 30.252 31.210 31.676 33.676 33.252 34.210 34.676 最小 26.917 26.752 27.835 28.376 28.917 29.835 30.376 29.752 30.835 31.376 33.376 32.752 33.835 34.376 规格（UNC）标准径最大最小

螺纹孔径对照表1

当之处，应视实际状况适当的变更钻头直径。

本表是依据2级牙制订。

注：迫牙丝攻之钻孔径，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
于参考上表之同时，亦请增减若干。

螺纹攻牙钻孔径和滚造径对照表
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；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、精度有很大的影响，所以使用本表之钻孔径，若有不。

螺丝攻牙径对照表

美制细牙螺纹
无沟丝攻钻孔径
等级
螺丝攻牙钻孔径和
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依据市售之标准钻头所选定的尺寸、精度有很大的影响，所以使用本表之钻孔径，若有不当之处，应视实际状况适当的变更钻头直径。

美制细牙螺纹美制细牙螺纹
英制螺纹
若干。

细牙螺纹
攻无沟丝攻钻孔径
精英制管螺纹
针车用螺纹
孔径和滚造径对照表
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，对于所钻孔变更钻头直径。

本表是依据 2 级牙制订。

细牙螺纹
英制管螺纹
英制管螺纹
公制螺纹。

最全的螺纹孔径对照表

最大最小最大最小G4-G6G7-G8G9M1.0*0.250.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98最大M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.25 1.06 1.08G 1/167.72 6.84M1.4*0.3 1.10 1.142 1.075M14*1.013.0013.15312.917M1.4*0.3 1.24 1.25G(PF)1/89.738.85M1.6*0.35 1.25 1.321 1.221M15*1.513.5013.67613.376M1.6*0.35 1.41 1.431/413.1611.89M1.7*0.35 1.35 1.421 1.321M15*1.014.0014.15313.917M1.7*0.35 1.51 1.533/816.6615.40M1.8*0.35 1.45 1.521 1.421M16*1.514.5014.67614.376M1.8*0.35 1.61 1.631/220.9619.17M2.0*0.4 1.60 1.679 1.567M16*1.015.0015.15314.917M2*0.4 1.78 1.805/822.9121.13M2.2*0.45 1.75 1.838 1.713M17*1.515.5015.67615.376M2.2*0.45 1.95 1.983/426.4424.66M2.3*0.4 1.90 1.979 1.867M17*1.016.0016.15315.917M2.3*0.4 2.08 2.107/830.2028.42M2.5*0.45 2.10 2.138 2.013M18*2.016.0016.21015.835M2.5*0.45 2.25 2.28133.2530.93M2.6*0.45 2.20 2.238 2.113M18*1.516.5016.67616.376M2.6*0.45 2.35 2.38 1.12537.9035.58M3.0*0.5 2.50 2.599 2.459M18*1.017.0017.15316.917M3.0*0.5 2.73 2.75 1.2541.9139.59M3.0*0.6 2.40 2.440 2.280M20*2.018.0018.21017.835M3.5*0.6 3.17 3.20 1.37544.3242.01M3.5*0.6 2.90 3.010 2.850M20*1.518.5018.67618.376M4.0*0.7 3.62 3.65 3.69 1.547.8049.02M4.0*0.7 3.30 3.422 3.242M20*1.019.0019.15318.917M5.0*0.8 4.56 4.60 4.64 1.62551.9150.79M4.0*0.75 3.25 3.326 3.106M22*2.020.0020.21019.835M6.0*1.0 5.45 5.50 5.55 1.7553.7556.66M4.5*0.75 3.80 3.878 3.688M22*1.520.5020.67620.376M7.0*1.0 6.45 6.50 6.55259.61M5.0*0.8 4.20 4.334 4.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44M5.0*0.9 4.10 4.170 3.930M24*2.022.0022.21021.835M10*1.59.189.259.32M6.0*1.0 5.00 5.153 4.917M24*1.522.5022.67622.376M10*1.259.319.389.44M7.0*1.0 6.00 6.153 5.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.21M8.0*1.25 6.80 6.912 6.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.44M9.0*1.257.807.9127.647M25*1.523.5023.67623.376最大M10*1.58.508.6768.376M25*1.024.0024.15323.917PS 1/16 - 28 6.50 6.632M11*1.59.509.6769.376M26*1.524.5024.67624.376PS 1/8 - 288.508.637M12*1.7510.3010.44110.106M27*2.025.0025.21024.835PS 1/4 - 1911.4011.549M14*2.012.0012.21011.835M27*1.525.5025.67625.376PS 3/8 - 1915.0015.054M16*2.014.0014.21013.835M27*1.026.0026.15325.917PS 1/2 - 1418.5018.773M18*2.515.5015.74415.294M28*2.026.0026.21025.835PS 3/4 - 1424.0024.259M20*2.517.5017.74417.294M28*1.526.5026.67626.376PS 1 - 1130.2030.471M22*2.519.5019.74419.294M28*1.027.0027.15326.917规格PS 1-1/4 - 1138.8039.132M24*3.021.0021.25220.752M30*3.027.0027.25226.752(UNC)最大最小PS 1-1/2 - 1144.8045.025M27*3.024.0024.25223.752M30*2.028.0028.21027.835 (螺丝牙外径)PS 2 - 1156.5056.836M30*3.526.5026.77126.211M30*1.528.5028.67628.376No.1-64(1.854) 1.55 1.582 1.425M30*1.029.0029.15328.917No.2-56(2.184) 1.80 1.871 1.695M32*2.030.0030.21029.835No.3-48(2.515) 2.10 2.146 1.941M32*1.530.5030.67630.376No.4-40(2.845) 2.30 2.385 2.157M33*3.030.0030.25229.752No.5-40(3.175) 2.60 2.697 2.487M33*2.031.0031.21030.835No.6-32(3.505) 2.80 2.895 2.642最大最小M33*1.531.5031.67631.376No.8-32(4.166) 3.40 3.530 3.302M1.0*0.20.800.8210.783M35*1.533.5033.67633.376No.10-24(4.826) 3.90 3.962 3.683M1.1*0.20.900.9210.883M36*3.033.0033.25232.752No.12-24(5.486) 4.50 4.597 4.344PT 1/16 -28 6.10 6.20 6.244 6.384M1.2*0.2 1.00 1.0210.983M36*2.034.0034.21033.8351/4 - 20 5.10 5.257 4.979PT 1/8 -288.108.208.4298.388M1.4*0.2 1.20 1.221 1.183M36*1.534.5034.67634.3765/16 - 18 6.60 6.731 6.401PT 1/4 -1910.7011.0010.96211.174M1.6*0.2 1.40 1.421 1.3833/8 - 168.008.1537.798PT 3/8 -1914.2014.5014.44814.658M1.7*0.2 1.45 1.500 1.4607/16 - 149.409.5509.144PT 1/2 -1417.6018.0017.97918.263M1.8*0.2 1.60 1.621 1.5831/2 - 1310.8011.02310.592PT 3/4 -1423.0023.5023.37823.663M2.0*0.25 1.75 1.785 1.7299/16 - 1212.2012.44611.989PT 1 -1129.0029.5029.45929.822M2.2*0.25 1.95 1.985 1.929规格5/8 - 1113.6012.86813.386PT 1-1/4 -1137.5038.0037.97638.339M2.3*0.25 2.05 2.061 2.001(UNF)最大最小3/4 - 1016.5018.84016.307PT 1-1/2 -1143.4044.0043.86944.232M2.5*0.35 2.20 2.221 2.1217/8 - 919.5019.76119.177PT 2 -1154.9055.5055.41255.844M2.6*0.35 2.20 2.246 2.186No.0-80(1.524) 1.25 1.305 1.182 1 - 822.2022.60621.971M3.0*0.35 2.70 2.721 2.621No.1-72(1.854) 1.55 1.612 1.4741-1/8 - 725.0025.34924.638M3.5*0.35 3.20 3.221 3.121No.2-64(2.184) 1.85 1.912 1.7561-1/4 - 728.2028.52427.813M4.0*0.5 3.50 3.599 3.459No.3-56(2.515) 2.10 2.197 2.0251-3/8 - 630.8031.11530.353M4.5*0.5 4.00 4.099 3.959No.4-48(2.845) 2.40 2.458 2.2711-1/2 - 634.0034.29033.528M5.0*0.5 4.50 4.599 4.459No.5-44(3.175) 2.70 2.740 2.5511-3/4 - 539.5039.82738.964M5.5*0.5 5.00 5.099 4.959No.6-40(3.505) 2.90 3.022 2.820 2 - 4-1/245.2045.59344.679使用绞刀时不用绞刀时M6.0*0.75 5.30 5.378 5.188No.8-36(4.166) 3.50 3.606 3.4041/16 - 27 6.10 6.25M6.0*0.5 5.50 5.550 5.400No.10-32(4.826) 4.10 4.165 3.9631/8 -278.338.43M7.0*0.75 6.30 6.378 6.188No.12-28(5.846) 4.60 4.724 4.4961/4 -1810.7211.13M7.0*0.5 6.50 6.550 6.4001/4 - 28 5.50 5.588 5.3603/8 -1814.2714.27M8.0*1.07.007.153 6.9175/16 - 24 6.907.035 6.782规格1/2 -1417.4817.86M8.0*0.757.307.3787.1883/8 - 248.508.6368.382(UNEF)最大最小3/4 -1422.6323.01M8.0*0.57.507.5207.4007/16 - 209.9010.0339.729No.12 - 32 4.70 4.826 4.623 1 -11-1/228.5828.98M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 32 5.60 5.690 5.4861-1/4 -11-1/237.3137.69M9.0*0.758.308.3788.1889/16 - 1812.9013.08112.7515/16 - 327.107.2647.0871-1/2 -11-1/243.6644.04M10*1.258.808.9128.4675/8 - 1814.5014.68114.3513/8 - 328.708.8658.661 2 -11-1/255.5855.96M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.135M10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 2811.8011.93811.709M10*0.59.509.5209.400 1 - 1223.2023.57123.1149/16 - 2413.2013.38613.132M11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.732M11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.678M12*1.510.5010.67610.3761-3/8 - 1232.8033.09632.6397/8 - 2021.0021.13320.853M12*1.2510.8010.91210.6471-1/2 - 1236.036.27135.8141 - 2024.0024.30824.028规格使用绞刀时不用绞刀时有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径螺纹攻牙钻孔径和滚造径对照表英制平行管用螺紋PF(G)(單位：mm)大径钻孔径规格公制细螺纹规格标准径2级牙钻孔径标准径2级牙钻孔径美制特细螺纹规格 (螺丝牙外径)美制细螺纹美制管螺纹钻孔径标准径美制粗螺纹标准径2级牙钻孔径公制粗螺纹公制迫牙丝攻钻孔径规格精度等级公制细螺纹2级牙钻孔径标准径规格14.9518.6320.5924.12最小6.568.5711.4541.3745.4949.6751.4327.8830.2934.9438.958.49511.341英制管螺纹钻孔径最小规格标准径N P T14.84623.97530.11138.77218.48944.66556.476英制管螺纹规格18.2623.4229.366.3511.1314.68N P S 44.4556.3638.108.7457.306.490注：迫牙丝攻之钻孔径，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，因此于参考上表之同时，亦请增减若干。

螺丝攻牙钻孔径和滚丝径对照表

螺丝攻牙钻孔径和滚丝径对照表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M1.0×0.25 0.75 0.785 0.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.25 0.85 0.885 0.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.25 0.95 0.985 0.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.867 1/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.013 5/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.113 3/8-16 8.00 8.153 7.798M3.0×0.5 2.50 2.599 2.459 7/16-14 9.40 9.55 9.144M3.0×0.6 2.40 2.440 2.280 1/2-13 10.80 11.023 10.592M3.5×0.6 2.90 3.010 2.850 9/16-12 12.20 12.446 11.989M4.0×0.7 3.30 3.422 3.242 5/8-11 13.60 12.868 13.386M4.0×0.75 3.25 3.326 3.106 3/4-10 16.50 18.840 16.307M4.5×0.75 3.80 3.878 3.688 7/8-9 19.50 19.761 19.177M5.0×0.8 4.20 4.334 4.134 1 22.2022.606 21.971M5.0×0.9 4.10 4.170 3.930 1-1/8-7 25.00 25.349 24.638M6.0×1.0 5.00 5.153 4.917 1-1/4-7 28.20 28.524 27.813M7.0×1.0 6.00 6.153 5.917 1-3/8-6 30.80 31.115 30.353M8.0×1.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528M9.0×1.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964M10×1.5 8.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679M11×1.5 9.50 9.676 9.376M12×1.75 10.30 10.441 10.106M14×2.0 12.00 12.210 11.835M16×2.0 14.00 14.210 13.835M18×2.5 15.50 15.744 15.294M20×2.5 17.50 17.744 17.294M22×2.5 19.50 19.744 19.294M24×3.0 21.00 21.252 20.752M27×3.0 24.00 24.252 23.752M30×3.5 26.50 26.771 26.211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M1.0×0.2 0.80 0.821 0.783 NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.021 0.983 NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383 NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846) 4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.121 1/4-28 5.50 5.588 5.360M2.6×0.35 2.20 2.246 2.186 5/16-24 6.90 7.035 6.782M3.0×0.35 2.70 2.721 2.621 3/8-24 8.50 8.636 8.382M3.5×0.35 3.20 3.221 3.121 7/16-20 9.90 10.033 9.729M4.0×0.5 3.50 3.599 3.459 1/2-20 11.50 11.607 11.329M4.5×0.5 4.00 4.099 3.959 9/16-18 12.90 13.081 12.751M5.0×0.5 4.50 4.599 4.459 5/8-18 14.50 14.681 14.351M5.5×0.5 5.00 5.099 4.959 3/4-16 17.50 17.678 17.323M6.0×0.75 5.30 5.378 5.188 7/8-14 20.50 20.675 20.270M6.0×0.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114M7.0×0.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289M7.0×0.5 6.50 6.550 6.400 1-1/4-1229.50 29.921 29.464M8.0×1.0 7.00 7.153 6.917 1-3/8-12 32.80 33.096 32.639M8.0×0.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814M8.0×0.5 7.50 7.520 7.400M9.0×1.0 8.00 8.153 7.917M9.0×0.75 8.30 8.378 8.188M10×1.25 8.80 8.912 8.647M10×1.0 9.00 9.153 8.917M10×0.75 9.30 9.378 9.188M10×0.5 9.50 9.520 9.400M11×1.0 10.00 10.153 9.917M11×0.75 10.30 10.378 10.188M12×1.5 10.50 10.676 10.376M12×1.25 10.80 10.912 10.647M12×0.5 11.50 11.520 11.400 M14×1.5 12.50 12.676 12.376 M14×1.0 13.00 13.153 12.917 M15×1.5 13.50 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 16.676 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 M22×2.0 20.00 20.210 19.835 M22×1.5 20.50 20.676 20.376 M22×1.0 21.00 21.153 20.917M24×1.5 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 30.376M33×3.0 30.00 30.252 29.752M33×2.0 31.00 31.210 30.835M33×1.5 31.50 31.676 31.376M35×1.5 33.50 33.676 33.376M36×3.0 33.00 33.252 32.752M36×2.0 34.00 34.210 33.835M36×1.5 34.50 34.676 34.376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-G6 G7-G8 G9 G4-G6 G7-G8 G9M1.0×0.25 0.86 0.88 －NO.2-56UNC 1.94 －－M1.1×0.25 0.96 0.98 －NO.3-48 2.23 －－M1.2×0.25 1.06 1.08 －NO.4-40 2.50 －－M1.4×0.3 1.24 1.25 －NO.5-40 2.83 －－M1.6×0.35 1.41 1.43 －NO.6-32 3.07 －－－M1.8×0.35 1.61 1.63 －NO.10-24 4.24 4.3 －M2.0×0.4 1.78 1.80 －NO.12-24 4.90 4.96 －M2.2×0.45 1.95 1.98 －1/4-20 －5.72 －M2.3×0.4 2.08 2.10 －5/16-18 －7.24 －M2.5×0.45 2.25 2.28 －3/8-16 －8.74 8.81 M2.6×0.45 2.35 2.38 －7/16-14 －10.20 10.30M3.0×0.5 2.73 2.75 －1/2-13 －11.27 11.82M3.5×0.6 3.17 3.20 －NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69 NO.3-56 2.27 －－M5.0×0.8 4.56 4.60 4.64 NO.4-48 2.56 －－－M7.0×1.0 6.45 6.50 6.55 NO.6-40 3.16 －－M8.0×1.25 7.31 7.38 7.44 NO.8-36 3.78 －－M10×1.5 9.18 9.25 9.32 NO.10-32 4.394.43 －M10×1.25 9.31 9.38 9.44 NO.12-28 4.99 5.04 －M12×1.75 11.04 11.12 11.21 1/4-28 5.85 5.90 －M12×1.25 11.31 11.38 11.44 5/16-24 7.36 7.41 －3/8-24 －9.00 －7/16-20 －10.48 10.541/2-20 －12.07 12.13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.12-32 4.70 4.826 4.623 2BA 4.0-4.2 1/4 -32 5.60 5.690 5.486 3BA5/16 -32 7.10 7.264 7.087 4BA 3.0-3.2 3/8 -32 8.70 8.865 8.661 5BA 2.7-2.8 7/16 -28 10.20 10.338 10.135 6BA 2.4-2.51/2 -28 11.80 11.938 11.7099/16 -24 13.20 13.386 13.1325/8 -24 14.80 14.986 14.7323/4 -20 17.80 17.958 17.6787/8 -20 21.00 21.133 20.8531 -20 24.00 24.308 24.028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 - 40 2.65 2.60 M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20 M3.0×0.6 2.56-2.53 SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70 M3.5×0.6 3.06-3.03 SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00 M4.0×0.7 3.49-3.45 SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50 M4.0×0.75 3.45-3.41 SM3/16-32 4.205-4.155W 3/8 - 16 8.00 7.90 M4.5×0.75 3.96-3.92 SM3/16-28 4.143-4.093W 7/16 - 14 9.40 9.30 M5.0×0.8 4.43-4.38 SM7/32-32 5.003-4.955W 1/2 - 12 10.70 10.50 M5.0×0.9 4.36-4.31 SM15/64-28 5.325-5.570W 9/16 - 12 12.30 12.00 M6.0×1.05.30-5.25 SM1/4-40 5.890-5.735W 5/8 - 11 13.70 13.50 M7.0×1.0 6.30-6.25 SM1/4-28 5.721-5.366W 3/4 - 10 16.70 16.50 M8.0×1.0 7.28-7.23 SM9/32-28 6.508-6.648W 7/8 - 9 19.50 19.30 M8.0×1.25 7.12-7.07 SM11/32-28 8.092-8.432W1 - 8 22.40 22.00 SM3/8-288.880-8.015W 1-1/8 - 7 25.00 24.80 SM7/16-28 10.466-10.401W 1 - 1/4 - 7 28.30 28.00 SM7/16-16 10.037-9.967SM1/2-20 11.819-11.749SM9/26-20 13.400-13.425英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径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）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPT NPS 使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490 PT 1/16 - 28 6.10 6.20 6.244 6.384 1/16 - 27 6.10 6.25 6.35PS 1/8 - 28 8.50 8.637 8.495 PT 1/8 - 28 8.10 8.20 8.249 8.388 1/8 - 27 8.33 8.43 8.74PS 1/4 - 19 11.40 11.549 11.341 PT 1/4 - 19 10.70 11.00 10.962 11.174 1/4 - 18 10.72 11.13 11.13PS 3/8 - 19 15.00 15.054 14.846 PT 3/8 - 19 14.20 14.50 14.448 14.658 3/8 - 18 14.27 14.27 14.68PS 1/2 - 14 18.50 18.773 18.489 PT 1/2 - 14 17.60 18.00 17.979 18.263 1/2 - 14 17.48 17.86 18.26PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.00 23.50 23.378 23.663 3/4 - 14 22.63 23.01 23.42PS 1 - 11 30.20 30.471 30.111 PT 1- 11 29.00 29.50 29.459 29.822 1 - 11-1/2 28.58 28.98 29.36PS 1-1/4 - 11 38.80 39.132 38.772 PT 1-1/4 - 11 37.50 38.00 37.976 38.3391-1/4-11-1/2 37.31 37.69 38.10PS 1-1/2 - 11 44.80 45.025 44.665 PT 1-1/2 - 11 43.40 44.00 43.869 44.2321-1/2-11-1/2 43.66 44.04 44.45PS 2 - 11 56.50 56.836 56.476 PT 2 - 11 54.90 55.50 55.412 55.844 2 - 11 - 1/2 55.58 55.96 56.36。

螺丝攻牙径对照表(集合版)

公制细螺纹规格 M1.0*0.2 M1.1*0.2 M1.2*0.2 M1.4*0.2 M1.6*0.2 M1.7*0.2 M1.8*0.2 M2.0*0.25 M2.2*0.25 M2.3*0.25 M2.5*0.35 标准径 0.8 0.9 1 1.2 1.4 1.45 1.6 1.75 1.95 2.05 2.2 2级牙钻孔径最大 0.821 0.921 1.021 1.221 1.421 1.5 1.621 1.785 1.985 2.061 2.221 最小 0.783 0.883 0.983 1.183 1.383 1.46 1.583 1.729 1.929 2.001 2.121 规格 M15*1.0 M16*1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 标准径 14 14.5 15 15.5 16 16 16.5 17 18 18.5 19 2级牙钻孔径最大 14.153 14.676 15.153 15.676 16.153 16.21 16.676 17.153 18.21 18.676 19.153 最小 13.917 14.376 14.917 15.376 15.917 15.835 16.376 16.917 17.835 18.376 18.917 规格（UNF) (螺丝牙外径） No.1 64(1.854) No.2 56(2.184) No.3 48(2.515) No.4 40(2.845) No.5 40(3.175) No.6 32(3.505) No.8 32(4.166) No.1024(4.826) No.1224(5.486) 2001-4-20
规格标准径规格标准径最大最小最大最小m1002507507850729m50084243344134m1102508508850829m601051534917m1202509509850929m701061535917m14031111421075m801256869126647m1603512513211221m901257879127647m1703513514211321m10158586768376m1803514515211421m11159596769376m20041616791567m121751031044110106m2204517518381713m142012122111835m23041919791867m162014142113835m250452121382013m18251551574415294m260452222382113m20251751774415294m30052525992459m22251951974419294m350629301285m2430212125220752m40073334223242m2730242425223752m450753838783688m30352652677126211规格标准径规格标准径最大最小最大最小m10020808210783m1510141415313917m11020909210883m16151451467614376m120210210983m1610151515314917m14021212211183m17151551567615376m16021414211383m1710161615315917m170214515146m182016162115835m18021616211583m18151651667616376m2002517517851729m1810171715316917m2202519519851929m202018182117835m2302520520612001m20151851867618376m250352222212121m2010191915318917m260352222462186m222020202119835m300352727212621m22152052067620376m350353232213121m2210212115320917m40053535993459m2

螺丝攻牙钻孔径和滚造径对照表

最大最小最大最小M1.0×0.250.750.7850.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.250.850.8850.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.250.950.9850.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.8671/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.0135/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.1133/8-168.008.1537.798M3.0×0.5 2.50 2.599 2.4597/16-149.409.559.144M3.0×0.6 2.40 2.440 2.2801/2-1310.8011.02310.592M3.5×0.6 2.90 3.010 2.8509/16-1212.2012.44611.989M4.0×0.7 3.30 3.422 3.2425/8-1113.6012.86813.386M4.0×0.75 3.25 3.326 3.1063/4-1016.5018.84016.307M4.5×0.75 3.80 3.878 3.6887/8-919.5019.76119.177M5.0×0.8 4.20 4.334 4.134122.2022.60621.971M5.0×0.9 4.10 4.170 3.9301-1/8-725.0025.34924.638M6.0×1.0 5.00 5.153 4.9171-1/4-728.2028.52427.813M7.0×1.0 6.00 6.153 5.9171-3/8-630.8031.11530.353M8.0×1.25 6.80 6.912 6.6471-1/2-634.0034.29033.528M9.0×1.257.807.9127.6471-3/4-539.5039.82738.964M10×1.58.508.6768.3762-4-1/245.2045.59344.679M11×1.59.509.6769.376M12×1.7510.3010.44110.106M14×2.012.0012.21011.835M16×2.014.0014.21013.835M18×2.515.5015.74415.294M20×2.517.5017.74417.294M22×2.519.5019.74419.294M24×3.021.0021.25220.752M27×3.024.0024.25223.752M30×3.526.5026.77126.211螺丝攻牙钻孔径和滚造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M1.0×0.20.800.8210.783NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.20.900.9210.883NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.0210.983NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846)4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.1211/4-285.50 5.588 5.360M2.6×0.35 2.20 2.246 2.1865/16-246.907.035 6.782M3.0×0.35 2.70 2.721 2.6213/8-248.508.6368.382M3.5×0.35 3.20 3.221 3.1217/16-209.9010.0339.729M4.0×0.5 3.50 3.599 3.4591/2-2011.5011.60711.329M4.5×0.5 4.00 4.099 3.9599/16-1812.9013.08112.751M5.0×0.5 4.50 4.599 4.4595/8-1814.5014.68114.351M5.5×0.5 5.00 5.099 4.9593/4-1617.5017.67817.323M6.0×0.75 5.30 5.378 5.1887/8-1420.5020.67520.270M6.0×0.5 5.50 5.550 5.4001-1223.2023.57123.114M7.0×0.75 6.30 6.378 6.1881-1/8-1226.5026.74626.289M7.0×0.56.506.5506.4001-1/4-1229.5029.92129.464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M8.0×1.07.007.153 6.9171-3/8-1232.8033.09632.639M8.0×0.757.307.3787.1881-1/2-1236.0036.27135.814M8.0×0.57.507.5207.400M9.0×1.08.008.1537.917M9.0×0.758.308.3788.188M10×1.258.808.9128.647M10×1.09.009.1538.917M10×0.759.309.3789.188M10×0.59.509.5209.400M11×1.010.0010.1539.917M11×0.7510.3010.37810.188M12×1.510.5010.67610.376M12×1.2510.8010.91210.647M12×1.011.0011.15310.917M12×0.511.5011.52011.400M14×1.512.5012.67612.376M14×1.013.0013.15312.917M15×1.513.5013.67613.376M15×1.014.0014.15313.917M16×1.514.5014.67614.376M16×1.015.0015.15314.917M17×1.515.5015.67615.376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M17×1.016.0016.15315.917M18×2.016.0016.21015.835M18×1.516.5016.67616.376M18×1.017.0017.15316.917M20×2.018.0018.21017.835M20×1.518.5018.67618.376M20×1.019.0019.15318.917M22×2.020.0020.21019.835M22×1.520.5020.67620.376M22×1.021.0021.15320.917M24×2.022.0022.21021.835M24×1.522.5022.67622.376M24×1.023.0023.15322.917M25×2.023.0023.21022.835M25×1.523.5023.67623.376M25×1.024.0024.15323.917M26×1.524.5024.67624.376M27×2.025.0025.21024.835M27×1.525.5025.67625.376M27×1.026.0026.15325.917M28×2.026.0026.21025.835M28×1.526.5026.67626.376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M28×1.027.0027.15326.917M30×3.027.0027.25226.752M30×2.028.0028.21027.835M30×1.528.5028.67628.376M30×1.029.0029.15328.917M32×2.030.0030.21029.835M32×1.530.5030.67630.376M33×3.030.0030.25229.752M33×2.031.0031.21030.835M33×1.531.5031.67631.376M35×1.533.5033.67633.376M36×3.033.0033.25232.752M36×2.034.0034.21033.835M36×1.534.5034.67634.376规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径G4-G6G7-G8G9G4-G6G7-G8G9M1.0×0.250.860.88－NO.2-56UNC 1.94－－M1.1×0.250.960.98－NO.3-48 2.23－－M1.2×0.25 1.06 1.08－NO.4-40 2.50－－M1.4×0.3 1.24 1.25－NO.5-40 2.83－－M1.6×0.35 1.41 1.43－NO.6-32 3.07－－M1.7×0.35 1.51 1.53－NO.8-32 3.73 3.77－M1.8×0.35 1.61 1.63－NO.10-24 4.24 4.3－M2.0×0.4 1.78 1.80－NO.12-24 4.90 4.96－M2.2×0.45 1.95 1.98－1/4-20－ 5.72－M2.3×0.4 2.08 2.10－5/16-18－7.24－M2.5×0.45 2.25 2.28－3/8-16－8.748.81M2.6×0.45 2.35 2.38－7/16-14－10.2010.30M3.0×0.5 2.73 2.75－1/2-13－11.2711.82M3.5×0.6 3.17 3.20－NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69NO.3-56 2.27－－M5.0×0.8 4.56 4.60 4.64NO.4-48 2.56－－M6.0×1.0 5.45 5.50 5.55NO.5-44 2.86－－M7.0×1.0 6.45 6.50 6.55NO.6-40 3.16－－M8.0×1.257.317.387.44NO.8-36 3.78－－M10×1.59.189.259.32NO.10-32 4.39 4.43－M10×1.259.319.389.44NO.12-28 4.99 5.04－M12×1.7511.0411.1211.211/4-28 5.85 5.90－M12×1.2511.3111.3811.445/16-247.367.41－3/8-24－9.00－7/16-20－10.4810.541/2-20－12.0712.13螺丝攻牙钻孔径和滚造径对照表公制迫牙丝攻钻孔径美制迫牙丝攻钻孔径规格精度等级规格精度等级最大最小NO.12-32 4.70 4.826 4.6232BA 4.0-41/4 -32 5.60 5.690 5.4863BA 5/16 -327.107.2647.0874BA 3.0-33/8 -328.708.8658.6615BA 2.7-27/16 -2810.2010.33810.1356BA2.4-21/2 -2811.8011.93811.7099/16 -2413.2013.38613.1325/8 -2414.8014.98614.7323/4 -2017.8017.95817.6787/8 -2021.0021.13320.8531 -2024.0024.30824.028美制特细螺纹英制电器螺纹规格钻孔规格(UNEF)标准径2级牙钻孔径使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490PT 1/16 - 28 6.10 6.20 6.244 6.3841/16 - 27 6.10 6.25 6.35PS 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 - 1417.6018.0017.97918.2631/2 - 1417.4817.8618.26PS 3/4 -1424.0024.25923.975PT 3/4 - 1423.0023.5023.37823.6633/4 - 1422.6323.0123.42PS 1 - 1130.2030.47130.111PT 1- 1129.0029.5029.45929.822 1 - 11-1/228.5828.9829.36PS 1-1/4 - 1138.8039.13238.772PT 1-1/4 - 1137.5038.0037.97638.3391-1/4-11-1/237.3137.6938.10PS 1-1/2 - 1144.8045.02544.665PT 1-1/2 - 1143.4044.0043.86944.2321-1/2-11-1/243.6644.0444.45PS 2 - 1156.5056.83656.476PT 2 - 1154.9055.5055.41255.8442 - 11 - 1/255.5855.9656.36钻孔径最大最小使用纹刀时不用纹刀时NPTNPS 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规格标准径钻孔径规格螺丝攻牙钻孔径和滚造径对照表英制管螺纹英制管螺纹美制管螺纹硬材软材W 1/8 - 40 2.65 2.60M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20M3.0×0.6 2.56-2.53SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70M3.5×0.6 3.06-3.03SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00M4.0×0.7 3.49-3.45SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50M4.0×0.75 3.45-3.41SM3/16-32 4.205-4.155W 3/8 - 168.007.90M4.5×0.75 3.96-3.92SM3/16-28 4.143-4.093W 7/16 - 149.409.30M5.0×0.8 4.43-4.38SM7/32-32 5.003-4.955W 1/2 - 1210.7010.50M5.0×0.9 4.36-4.31SM15/64-28 5.325-5.570W 9/16 - 1212.3012.00M6.0×1.0 5.30-5.25SM1/4-40 5.890-5.735W 5/8 - 1113.7013.50M7.0×1.0 6.30-6.25SM1/4-28 5.721-5.366W 3/4 - 1016.7016.50M8.0×1.07.28-7.23SM9/32-28 6.508-6.648W 7/8 - 919.5019.30M8.0×1.257.12-7.07SM11/32-288.092-8.432W1 - 822.4022.00SM3/8-288.880-8.015W 1-1/8 - 725.0024.80SM7/16-2810.466-10.401W 1 - 1/4 - 728.3028.00SM7/16-1610.037-9.967SM1/2-2011.819-11.749SM9/26-2013.400-13.425规格滚造径规格(UNEF)钻孔径规格滚造径螺丝攻牙钻孔径和滚造径对照表英制螺纹公制螺纹针车用螺纹。

螺纹孔径对照表

当之处，应视实际状况适当的变更钻头直径。

本表是依据2级牙制订。

螺纹攻牙钻孔径和滚造径对照表
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；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、精度有很大的影响，所以使用本表之钻孔径，若有不。

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2.2 2.7 3.2 3.5 4 4.5 5 5.3 5.5 6.3 6.5 7 7.3 7.5 8 8.3 8.8 9 9.3 9.5 10 10.3 10.5 10.8 11 11.5 12.5 13 13.5
2.246 2.721 3.221 3.599 4.099 4.599 5.099 5.378 5.55 6.378 6.55 7.153 7.378 7.52 8.153 8.378 8.912 9.153 9.378 9.52 10.153 10.378 10.676 10.912 11.153 11.52 12.676 13.153 13.676
20 20.5 21 22 22.5 23 23 23.5 24 24.5 25 25.5 26 26 26.5 27 27 28 28.5 34.5
20.21 20.676 21.153 22.21 22.676 23.153 23.21 23.676 24.153 24.676 25.21 25.676 26.153 26.21 26.676 27.153 27.252 28.21 28.676 29.153 30.21 30.676 31.21 31.21 31.676 33.676 33.252 34.21 34.676
19.835 20.376 20.917 21.835 22.376 22.917 22.835 23.376 23.917 24.376 24.835 25.376 25.917 25.835 26.376 26.917 26.752 27.835 28.376 28.917 29.835 30.376 30.835 30.835 31.376 33.376 32.752 33.835 34.376
公制细螺纹规格 M1.0*0.2 M1.1*0.2 M1.2*0.2 M1.4*0.2 M1.6*0.2 M1.7*0.2 M1.8*0.2 M2.0*0.25 M2.2*0.25 M2.3*0.25 M2.5*0.35 标准径 0.8 0.9 1 1.2 1.4 1.45 1.6 1.75 1.95 2.05 2.2 2级牙钻孔径最大 0.821 0.921 1.021 1.221 1.421 1.5 1.621 1.785 1.985 2.061 2.221 最小 0.783 0.883 0.983 1.183 1.383 1.46 1.583 1.729 1.929 2.001 2.121 规格 M15*1.0 M16*1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 标准径 14 14.5 15 15.5 16 16 16.5 17 18 18.5 19 2级牙钻孔径最大 14.153 14.676 15.153 15.676 16.153 16.21 16.676 17.153 18.21 18.676 19.153 最小 13.917 14.376 14.917 15.376 15.917 15.835 16.376 16.917 17.835 18.376 18.917 规格（UNF) (螺丝牙外径） No.1 64(1.854) No.2 56(2.184) No.3 48(2.515) No.4 40(2.845) No.5 40(3.175) No.6 32(3.505) No.8 32(4.166) No.1024(4.826) No.1224(5.486) 2001-4-20
M22*2.0 M22*1.5 M22*1.0 M24*2.0 M24*1.5 M24*1.0 M25*2.0 M25*1.5 M25*1.0 M26*1.5 M27*2.0 M27*1.5 M27*1.0 M28*2.0 M28*1.5 M28*1.0 M30*3.0 M30*2.0 M30*1.5 M30*1.0 M32*2.0 M32*1.5 M33*3.0 M33*2.0 M33*1.5 M35*1.5 M36*3.0 M36*2.0 M36*1.5
M2.6*0.45 注：迫牙丝攻之钻孔径，在有所变动，因此於参考上表
规格 PT 1/16 -28 PT 1/8 -28 PT 1/4 -19 PT 3/8 -19 PT 1/2 -14 PT 3/4 -14 PT 1 -11 PT 1-1/4-11 PT 1-1/2-11 PT 2 -11
英制管螺纹钻孔径规格 PC 1/16 -28 RP 1/8 -28 G 1/4 -19 共 3/8 19 用 1/2 -14 前 3/4 14 用 1 11 PS 1-1/4-11 1-1/2-11 2月11日标准径 6.5 8.5 11.4 15 18.5 24 30.2 38.8 44.8 56.5 英制螺纹规格 W1/8 -40 W5/32 -32 W3/16 -24 W1/4 -20 W5/16 -18 W3/8 -16 W7/16 -14 W1/2 -12 W9/16 -12 W5/8 -11 W3/4 -10 W7/8 -9 W1 -8 W1-1/8 -7 W1-1/4 -7 钻孔径硬材 2.65 3.25 3.75 5.1 6.6 8 9.4 10.7 12.3 13.7 16.7 19.5 22.4 25 28.3 软材 2.6 3.2 3.7 5 6.5 7.9 9.3 10.5 12 13.5 16.5 19.3 22 24.8 28 规格 2BA 3BA 4BA 5BA 6BA 规格最大 6.632 8.637 11.549 15.054 18.773 24.259 30.471 39.132 45.025 56.836 最小 6.49 8.495 11.341 14.846 18.489 23.975 30.111 38.772 44.665 56.476 规格 1/16 -27 2001-8-27 2001-4-18 2003-8-18 2001-2-14 2003-4-14 1 -11-1/2 1-1/4 -111/2 1-1/2 -111/2 2 -11-1/2
螺丝攻牙钻孔径和滚造径对照表公制粗螺纹规格 M1.0*0.25 M1.1*0.25 M1.2*0.25 M1.4*0.3 M1.6*0.35 M1.7*0.35 M1.8*0.35 M2.0*0.4 M2.2*0.45 M2.3*0.4 M2.5*0.45 M2.6*0.45 M3.0*0.5 M3.5*0.6 M4.0*0.7 M4.5*0.75 标准径 0.75 0.85 0.95 1.1 1.25 1.35 1.45 1.6 1.75 1.9 2.1 2.2 2.5 2.9 3.3 3.8 2级牙钻孔径最大 0.785 0.885 0.985 1.142 1.321 1.421 1.521 1.679 1.838 1.979 2.138 2.238 2.599 3.01 3.422 3.878 最小 0.729 0.829 0.929 1.075 1.221 1.321 1.421 1.567 1.713 1.867 2.013 2.113 2.459 2.85 3.242 3.688 规格 M5.0*0.8 M6.0*1.0 M7.0*1.0 M8.0*1.25 M9.0*1.25 M10*1.5 M11*1.5 M12*1.75 M14*2.0 M16*2.0 M18*2.5 M20*2.5 M22*2.5 M24*3.0 M27*3.0 M30*3.5 标准径 4.2 5 6 6.8 7.8 8.5 9.5 10.3 12 14 15.5 17.5 19.5 21 24 26.5 2级牙钻孔径最大 4.334 5.153 6.153 6.912 7.912 8.676 9.676 10.441 12.21 14.21 15.744 17.744 19.744 21.252 24.252 26.771 最小 4.134 4.917 5.917 6.647 7.647 8.376 9.376 10.106 11.835 13.835 15.294 15.294 19.294 20.752 23.752 26.211 规格（UNF) (螺丝牙外径） No.080(1.524) No.172(1.854) No.264(2.184) No.356(2.515) No.448(2.845) No.544(3.175) No.640(3.505) No.836(4.166) No.1032(4.826) No.1228(5.846) 2001-4-28 5/16 -24
2.186 2.621 3.121 3.459 3.959 4.459 4.959 5.188 5.4 6.188 6.4 6.917 7.188 7.4 7.917 8.188 8.647 8.917 9.188 9.4 9.917 10.188 10.376 10.647 10.917 11.4 12.376 12.917 13.376
5/16 -18 2003-8-16 7/16 -14
规格（UNF) No.12-32 1/4 -32 5/16 -32 3/8 -32 7/16 -28 2001-2-28
规格 M1.0*0.25 M1.1*0.25 M1.2*0.25 M1.4*0.3 M1.6*0.35 M1.7*0.35 M1.8*0.35 M2.0*0.4 M2.2*0.45 M2.3*0.4 M2.5*0.45
美制迫牙丝攻钻孔径规格 No. 2-56UNC No. 3-48 No. 4-40 No. 5-40 No. 6-32 No. 8-32 No.10-24 No.12-24 2001-4-20 5/16 -18 2003-8-16 7/16 -14 2001-2-13 精度等级 G4-G6 2 2.23 2.5 2.83 3.175 3.73 4.24 4.9 _ _ _ _ _ _ _ _ _ _ G7-G8 _ _ _ _ _ _ _ _ _ _ 3.77 4.3 4.96 5.72 7.24 8.74 10.2 11.27 G9 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 8.81 10.3 11.82 规格 No. 2-64UNC No. 3-56 No. 4-48 No. 5-44 No. 6-40 No. 8-36 No.10-32 No.12-28 2001-4-28 5/16 -24 2003-8-24 7/16 -20 2001-2-20 精度等级 G4-G6 1.97 2.27 2.56 2.86 3.16 3.78 4.39 4.99 5.85 7.36 _ _ _ _ _ _ G7-G8 _ _ _ _ _ _ _ _ _ _ _ _ 4.43 5.04 5.9 7.41 9 10.48 12.07 G9 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 10.54 12.13