螺纹孔参照表很全面

最大

最小最大最小G4-G6G7-G8G9G4-G6G7-G8硬 材软 材M1.0*0.25

0.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88No.2-56UNC 1.94 2.65 2.60M1.1*0.25

0.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98No.3-48 2.23 3.25 3.20M1.2*0.25

0.950.9850.929M14*1.512.5012.67612.376M1.2*0.25 1.06 1.08No.4-40 2.50 3.75 3.70M1.4*0.3

1.10 1.142 1.075M14*1.013.0013.1531

2.917M1.4*0.3 1.24 1.25No.5-40 2.83 5.10 5.00M1.6*0.35

1.25 1.321 1.221M15*1.513.5013.67613.376M1.6*0.35 1.41 1.43No.6-32 3.07 6.60 6.50M1.7*0.35

1.35 1.421 1.321M15*1.014.0014.15313.917M1.7*0.35 1.51 1.53No.8-32 3.73 3.778.007.90M1.8*0.35

1.45 1.521 1.421M16*1.514.5014.67614.376M1.8*0.35 1.61 1.63No.10-24 4.24 4.309.409.30M

2.0*0.4

1.60 1.679 1.567M16*1.015.0015.15314.917M2*0.4 1.78 1.80No.12-24 4.90 4.9610.7010.50M

2.2*0.45

1.75 1.838 1.713M17*1.515.5015.67615.376M

2.2*0.45 1.95 1.981/4 -20 5.7212.3012.00M2.3*0.4

1.90 1.979 1.867M17*1.016.0016.15315.917M

2.3*0.4 2.08 2.105/16 -187.241

3.7013.50M2.5*0.45

2.10 2.138 2.013M18*2.016.0016.21015.835M2.5*0.45 2.25 2.283/8 -168.7416.7016.50M2.6*0.45

2.20 2.238 2.113M18*1.516.5016.67616.376M2.6*0.45 2.35 2.387/16 -1410.2019.5019.30M

3.0*0.5

2.50 2.599 2.459M18*1.017.0017.15316.917M

3.0*0.5 2.73 2.751/2 -1311.2722.4022.00M3.0*0.6

2.40 2.440 2.280M20*2.018.0018.21017.835M

3.5*0.6 3.17 3.20No.2-64UNF 1.9725.002

4.80M3.5*0.6

2.90

3.010 2.850M20*1.518.5018.67618.376M

4.0*0.7 3.62 3.65 3.69No.3-56 2.2728.3028.00M4.0*0.7

3.30 3.422 3.242M20*1.019.0019.15318.917M5.0*0.8

4.56 4.60 4.64No.4-48 2.56M4.0*0.75

3.25 3.326 3.106M22*2.020.0020.21019.835M6.0*1.0 5.45 5.50 5.55No.5-44 2.86M

4.5*0.75

3.80 3.878 3.688M22*1.520.5020.67620.376M7.0*1.0 6.45 6.50 6.55No.6-40 3.16M5.0*0.8

4.20 4.334 4.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44No.8-36 3.78M

5.0*0.9

4.10 4.170 3.930M24*2.022.0022.21021.835M10*1.59.189.259.32No.10-32 4.39 4.43M6.0*1.0

5.00 5.153 4.917M24*1.522.5022.67622.376M10*1.259.319.389.44No.12-28 4.99 5.04SM1/8 -40M7.0*1.0

6.00 6.153 5.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.211/4 -28 5.85 5.90SM1/8 -44M8.0*1.25

6.80 6.912 6.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.445/16 -24

7.367.41SM9/64 -40M9.0*1.25

7.807.9127.647M25*1.523.5023.67623.3763/8 -249.00SM11/64-40M10*1.5

8.508.6768.376M25*1.024.0024.15323.9177/16 -2010.48SM3/16 -32M11*1.5

9.509.6769.376M26*1.524.5024.67624.3761/2 -2012.07SM3/16 -28M12*1.75

10.3010.44110.106M27*2.025.0025.21024.835SM7/32 -32M14*2.0

12.0012.21011.835M27*1.525.5025.67625.376SM15/64-28M16*2.0

14.0014.21013.835M27*1.026.0026.15325.917SM1/4 -40M18*2.5

15.5015.74415.294M28*2.026.0026.21025.835SM1/4 -28M20*2.5

17.5017.74417.294M28*1.526.5026.67626.376SM9/32 -28M22*2.5

19.5019.74419.294M28*1.027.0027.15326.917规格最大SM11/32-28M24*3.0

21.0021.25220.752M30*3.027.0027.25226.752(UNC)最大最小PS 1/16 - 28 6.50 6.632SM3/8 -28M27*3.0

24.0024.25223.752M30*2.028.0028.21027.835 (螺丝牙外径)PS 1/8 - 288.508.637SM7/16 -28M30*3.526.5026.77126.211M30*1.5

28.5028.67628.376No.1-64(1.854) 1.55 1.582 1.425PS 1/4 - 1911.4011.549M30*1.0

29.0029.15328.917No.2-56(2.184) 1.80 1.871 1.695PS 3/8 - 1915.0015.054M32*2.0

30.0030.21029.835No.3-48(2.515) 2.10 2.146 1.941PS 1/2 - 1418.5018.773M32*1.5

30.5030.67630.376No.4-40(2.845) 2.30 2.385 2.157PS 3/4 - 1424.0024.259M33*3.0

30.0030.25229.752No.5-40(3.175) 2.60 2.697 2.487PS 1 - 1130.2030.471M33*2.0

31.0031.21030.835No.6-32(3.505) 2.80 2.895 2.642PS 1-1/4 - 1138.8039.132最大最小M33*1.5

31.5031.67631.376No.8-32(4.166) 3.40 3.530 3.302PS 1-1/2 - 1144.8045.025M1.0*0.20.800.8210.783M35*1.5

33.5033.67633.376No.10-24(4.826) 3.90 3.962 3.683PS 2 - 1156.5056.836M1.1*0.20.900.9210.883M36*3.0

33.0033.25232.752No.12-24(5.486) 4.50 4.597 4.344M1.2*0.2 1.00 1.0210.983M36*2.0

34.0034.21033.8351/4 - 20 5.10 5.257 4.979M1.4*0.2 1.20 1.221 1.183M36*1.534.5034.67634.3765/16 - 18 6.60 6.731

6.401M1.6*0.2 1.40 1.421 1.3833/8 - 168.008.153

7.798M1.7*0.2 1.45 1.500 1.4607/16 - 149.409.550

9.144M1.8*0.2 1.60 1.621 1.5831/2 - 1310.8011.023

10.592使用绞刀时不用绞刀时M2.0*0.25 1.75 1.785 1.7299/16 - 1212.2012.446

11.989PT 1/16 -28 6.10 6.20 6.244 6.384M2.2*0.25 1.95 1.985 1.929规格5/8 - 1113.6012.868

13.386PT 1/8 -288.108.208.4298.388M2.3*0.25 2.05 2.061 2.001(UNF)最大最小3/4 - 1016.5018.840

16.307PT 1/4 -1910.7011.0010.96211.174M2.5*0.35 2.20 2.221 2.1217/8 - 919.5019.761

19.177PT 3/8 -1914.2014.5014.44814.658M2.6*0.35 2.20 2.246 2.186No.0-80(1.524) 1.25 1.305 1.182 1 - 822.2022.606

21.971PT 1/2 -1417.6018.0017.97918.263M3.0*0.35 2.70 2.721 2.621No.1-72(1.854) 1.55 1.612 1.4741-1/8 - 725.0025.349

24.638PT 3/4 -1423.0023.5023.37823.663M3.5*0.35 3.20 3.221 3.121No.2-64(2.184) 1.85 1.912 1.7561-1/4 - 728.2028.524

27.813PT 1 -1129.0029.5029.45929.822M4.0*0.5 3.50 3.599 3.459No.3-56(2.515) 2.10 2.197 2.0251-3/8 - 630.8031.115

30.353PT 1-1/4 -1137.5038.0037.97638.339M4.5*0.5 4.00 4.099 3.959No.4-48(2.845) 2.40 2.458 2.2711-1/2 - 634.0034.290

33.528PT 1-1/2 -1143.4044.0043.86944.232M5.0*0.5 4.50 4.599 4.459No.5-44(3.175) 2.70 2.740 2.5511-3/4 - 539.5039.827

38.964PT 2 -1154.9055.5055.41255.844M5.5*0.5

5.00 5.099 4.959No.6-40(3.505) 2.90 3.022 2.820 2 - 4-1/245.2045.59344.679M

6.0*0.75

5.30 5.378 5.188No.8-36(4.166) 3.50 3.606 3.404M

6.0*0.5

5.50 5.550 5.400No.10-32(4.826) 4.10 4.165 3.963M7.0*0.75

6.30 6.378 6.188No.12-28(5.846) 4.60 4.724 4.496M

7.0*0.5

6.50 6.550 6.4001/4 - 28 5.50 5.588 5.360M8.0*1.0

7.007.153 6.9175/16 - 24 6.907.035 6.782规格M8.0*0.75

7.307.3787.1883/8 - 248.508.6368.382(UNEF)最大最小使用绞刀时不用绞刀时M8.0*0.5

7.507.5207.4007/16 - 209.9010.0339.729No.12 - 32 4.70 4.826 4.6231/16 - 27 6.10 6.25M9.0*1.0

8.008.1537.9171/2 - 2011.5011.60711.3291/4 - 32 5.60 5.690 5.4861/8 -278.338.43M9.0*0.75

8.308.3788.1889/16 - 1812.9013.08112.7515/16 - 327.107.2647.0871/4 -1810.7211.13M10*1.25

8.808.9128.4675/8 - 1814.5014.68114.3513/8 - 328.708.8658.6613/8 -1814.2714.27M10*1.0

9.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.1351/2 -1417.4817.86M10*0.75

9.309.3789.1887/8 - 1420.5020.67520.2701/2 - 2811.8011.93811.7093/4 -1422.6323.01M10*0.5

9.509.5209.400 1 - 1223.2023.57123.1149/16 - 2413.2013.38613.132 1 -11-1/228.5828.98M11*1.0

10.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.7321-1/4 -11-1/237.3137.69M11*0.75

10.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.6781-1/2 -11-1/243.6644.04M12*1.5

10.5010.67610.3761-3/8 - 1232.8033.09632.6397/8 - 2021.0021.13320.853 2 -11-1/255.5855.96

M12*1.2510.8010.91210.6471-1/2 - 1236.036.27135.814 1 - 2024.0024.30824.028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，若有不标准径2级牙钻孔径标准径2级牙钻孔径 4.0-4.2M4.0*0.7M4.0*0.75M4.5*0.75钻 孔 径3.0-3.2英制电器螺纹4BA 规 格2BA M5.0*0.8M5.0*0.9SM7/16 -16SM1/2 -20M6.0*1.0M7.0*1.0M8.0*1.0M8.0*1.25规格M3*0.5M3.0*0.6M3.5*0.6 4.36-4.315.30-5.255BA 6BA 3BA 7.12-7.072.7-2.82.4-2.5滚造径2.63-2.602.56-2.533.06-3.036.30-6.257.28-7.233.49-3.453.45-3.413.96-3.924.43-4.3811.819-11.74913.400-13.425公 制 螺 纹注：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。SM9/16 -208.092-8.4328.880-8.01510.466-10.40110.037-9.9675.325-5.5702.769-2.7223.128-3.0835.890-5.7355.721-5.3666.508-6.6483.855-3.8054.205-4.1554.143-4.0935.003-4.955W1-1/8-7W1-1/4-7规格针 车 用 螺 纹滚造径2.735-2.688W1/2 -12W9/16 -12W5/8 -11W3/4 -10W7/8 -9W1 -8W5/32 -32W3/16 -24W1/4 -20W5/16 -18W3/8 -16W7/16 -1456.36英 制 螺 纹钻孔径规 格18.2623.4229.3638.106.35W1/8 -4011.1314.68规格N P T N P S 44.458.74有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径英 制 管 螺 纹44.66556.4768.49511.34114.84623.97530.11138.77210.5418.48912.13英 制 管 螺 纹钻孔径最小规格标准径 6.49010.3011.828.81G9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。（黄色代表公制，绿色代表美制，蓝色代表英制）公 制 细 螺 纹2级牙钻孔径标准径规格

公 制 粗 螺 纹

公 制 迫 牙 丝 攻 钻 孔 径规 格精 度 等 级美 制 粗 螺 纹规 格规格公 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 迫 牙 丝 攻 钻 孔 径精 度 等 级G管螺纹的基本尺寸

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