螺纹攻牙-钻孔直径对照表

******本表依据二级牙

规格最大最小最大最小G1-G6G7-G8G9G1-G6G7-G8G9硬材软材M1.0*0.250.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88螺孔小径..1.94....W1/8 - 402.652.60

M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98..2.23....W5/32 - 323.253.20

M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.251.061.08..2.50....W3/16 - 243.753.70

M1.4*0.31.101.1421.075M14*1.013.0013.15312.917M1.4*0.31.241.25..2.83....W1/4 - 205.105.00

M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*0.351.411.43..3.07....W5/16 - 186.606.50

M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7*0.351.511.53..3.733.77..W3/8 - 168.007.90

M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0.351.611.63..4.244.30..W7/16 - 149.409.30

M2.0*0.41.601.6791.567M16*1.015.0015.15314.917M2.0*0.41.781.80..4.904.96..W1/2 - 1210.7010.50

M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.451.951.98....5.72..W9/16 - 1212.3012.00

M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.42.082.10....7.24..W5/8 - 1113.7013.50

M2.5*0.452.102.1382.013M18*2.016.0016.21015.835M2.5*0.452.252.28....8.748.81W3/4 - 1016.7016.50

M2.6*0.452.202.2382.113M18*1.516.5016.67516.376M2.6*0.452.352.38....10.2010.30W7/8 - 919.5019.30

M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.52.732.75....11.2711.82W1 - 822.4022.00

M3.0*0.62.402.4402.280M20*2.018.0018.21017.835M3.5*0.63.173.20..1.97....W1-1/8 -725.0024.80

M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.73.623.653.692.27....W1-1/4 -728.3028.00

M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.84.564.604.642.56....

M4.0*0.753.253.3263.106M22*2.020.0020.21019.835M6.0*1.05.455.505.552.86....

M4.5*0.753.803.8783.688M22*1.520.5020.67620.376M7.0*1.06.456.506.553.16....

M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.257.317.387.443.78....

M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.59.189.259.324.394.43..

M6.0*1.05.005.1534.917M24*1.522.5022.67623.376M10*1.259.319.389.444.995.04..

M7.0*1.06.006.1535.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.215.855.90..规格

M8.0*1.256.806.9126.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.447.367.41..SM1/8 - 40

M9.0*1.257.807.9127.647M25*1.523.5022.67623.376..9.00..SM1/8 - 44

M10*1.58.508.6768.375M25*1.024.0024.15323.917..10.4810.54SM9/64 - 40

M11*1.59.509.6769.376M26*1.524.5024.67624.376..12.0712.13SM11/64 - 40

M12*1.7510.3010.44110.106M27*2.025.0025.21024.835SM3/16 - 32

M14*2.012.0012.21011.835M27*1.525.5025.67625.376SM3/16 - 28

M16*2.014.0014.21013.835M27*1.026.0026.15325.917SM7/22 - ?

M18*2.515.5015.74415.294M28*2.026.0026.21025.835最大最小SM15/64 - 28

M20*2.517.5017.74417.294M28*1.526.5026.67626.376NO. 1 - 64(1.854)1.551.5821.452最大最小SM1/4 - 40

M22*2.519.5019.74419.294M28*1.027.0027.15326.917NO. 2 - 56(2.184)1.801.8711.6956.506.6326.490SM1/4 - 28

M24*3.021.0021.25220.752M30*3.027.0027.25226.752NO. 3 - 48(2.515)2.102.1461.9418.508.6378.495SM9/32 - 28

M27*3.024.0024.25223.752M30*2.028.0028.21027.835NO .4 - 40(2.845)2.302.3852.15711.4011.54911.341SM11/32 - 28

M30*3.526.5026.77126.211M30*1.528.5028.67628.376NO .5 - 40(3.175)2.602.6972.48715.0015.05414.846SM3/8 - 28

M30*1.029.0029.15328.917NO .6 - 32(3.505)2.802.8952.64218.5018.77318.489SM7/16 - 28

M32*2.030.0030.21029.835NO. 8 - 32(4.166)3.403.5303.30224.0024.25923.975SM7/16 - 16

最大最小M32*1.530.5030.67630.376NO.10 - 24(4.826)3.903.9623.68330.2030.47130.111SM1/2 - 20

M1.0*0.20.800.8210.783M33*3.030.0030.25229.752NO.12 - 24(5.486)4.504.5974.34438.8039.13238.772SM9/16 - 20

M1.1*0.20.900.9210.883M33*2.031.0031.21030.8351/4 - 205.105.2574.97944.8045.02544.665

M1.2*0.21.001.0210.983M33*1.531.5031.67631.3765/16 - 186.606.7316.40156.5056.83656.476

M1.4*0.21.201.2211.183M35*1.533.5033.67633.3763/8 - 168.008.1537.798

M1.6*0.21.401.4211.383M36*3.033.0033.25232.7527/16 - 149.409.5509.144

M1.7*0.21.451.5001.460M36*2.034.0034.21033.8351/2 - 1310.8011.02310.592

M1.8*0.21.601.6211.583M36*1.534.5034.67634.3769/16 - 1212.2012.44611.989规格

M2.0*0.251.751.7851.7295/8 - 1113.6012.86811.386最大最小

M2.2*0.251.951.9851.9293/4 - 1016.5018.84016.307PT1/16 - 286.106.206.2446.384规格

M2.3*0.252.052.0612.0017/8 - 919.5019.76119.177PT1/8 - 288.108.208.2498.388M3 * 0.5

M2.5*0.352.202.2212.121最大最小1 -822.2022.60621.971PT1/4 - 1910.7011.0010.96211.174M3.0 * 0.6

M2.6*0.352.202.2462.186NO.0-80(1.524)1.251.3051.1821 -1/8 - 725.0025.34924.638PT3/8 - 1914.2014.5014.44814.658M3.5 * 0.6

M3.0*0.352.702.7212.621NO.1-72(1.854)1.551.6121.4741 -1/4 -28.2028.52427.813PT1/2 - 1417.6018.0017.97918.263M4.0 * 0.7

M3.5*0.353.203.2213.121NO.2-64(2.184)1.851.9121.7561 -3/8 -30.8031.11530.353PT3/4 - 1423.0023.5023.37823.663M4.0 * 0.75

M4.0*0.53.503.5993.459NO.3-56(2.515)2.102.1972.0251 -1/2 - 634.0034.29033.528PT1 - 1129.0029.5029.45929.822M4.5 * 0.75

M4.5*0.54.004.0993.959NO.4-48(2.845)2.402.4582.2711 -3/4 - 539.5039.82738.964PT1-1/4 - 1137.5038.0037.97638.339M5.0 * 0.8

M5.0*0.54.504.5994.459NO.5-44(3.175)2.702.7402.5512-4-1/245.2045.59344.679PT1-1/2 -1143.4044.0043.86944.232M5.0 * 0.9

M5.5*0.55.005.0994.959NO.6-40(3.505)2.903.0222.820PT2 - 1154.9055.50055.41255.844M6.0 * 1.0

M6.0*0.755.305.3785.188NO.8-36(4.166)3.503.6063.404M7.0 * 1.0

M6.0*0.55.505.5505.400NO.10-32(4.826)4.104.1653.963M8.0 * 1.0

M7.0*0.756.306.3786.188NO.12-28(5.846)4.604.7244.496M8.0 * 1.25

M7.0*0.56.506.5506.4001/4 - 285.505.5882.360

M8.0*1.07.007.1536.9175/16 - 245.907.0355.782标准径

M8.0*0.757.307.3787.4883/8 - 248.508.6368.382最大最小

M8.0*0.57.507.5207.4007/16 - 209.9010.0339.729NO. 12 -324.704.8254.623??

M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 325.605.6905.4866.106.256.35

M9.0*0.758.308.3788.1883/16 - 1812.9013.08112.7515/16 - 327.107.2647.0878.338.438.74

M10*1.258.808.9128.6475/8 - 1814.5014.68114.3513/8 - 328.708.8658.66110.7211.1311.13

M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.13514.2714.2714.68

M10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 2811.8011.93811.70917.4817.8618.25规格

M10*0.59.508.5209.4001 -1223.2023.57123.1149/16 - 2413.2013.38613.13222.6323.0123.4228A

M11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.73228.5828.9829.3638A

M11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.67837.3137.6938.1048A

M12*1.510.5010.67610.3751-3/8 - 1232.8033.09632.6397/8 - 2021.0021.13320.85343.6644.0444.4558A

M12*1.2510.8010.91210.6471-1/2 - 1236.0036.27135.8141 - 2024.0024.30824.02855.5855.9656.3668A2 - 11-1/2英制管螺纹

规格钻孔径

NPT

1-1/2 - 11-1/2NPS

3/8 - 18螺 纹 攻 牙 钻 孔 径 和 滚 造 径 对 照 表.

13.400-13.425针车用螺纹

滚造径

2.735-2.688

2.769-2.722规格标准径规格

钻孔径

标准径二级牙钻孔径

1 - 11-1/2

1-1/4 - 11-1/23/4 - 141/2 - 141/16 - 27

1/8 - 27

1/4 - 18NO. 8-32精度等级美制迫牙丝攻钻孔径

规格

美制细螺纹英制管螺纹

标准径??英制管螺纹1/2 - 137/16 - 14NO. 6-32NO. 2-56UNC

NO. 3-48

NO. 4-40

NO. 5-40

1/4 - 20NO.12-24NO.10-24

3/8 - 165/16 - 18

NO.12-29NO.10-32NO. 8-36NO. 6-40NO. 5-44NO. 4-48NO. 3-56 NO. 2-64UNF

标准径

规格（UNEF）PS 1/8 - 281/2 - 207/16 - 203/8 - 24

规格

PS 1/16 - 28

PS 1/4 - 195.890-5.735

5.721-5.3661/4 - 28

8.880-8.015标准径

二级牙钻孔径美制特细螺纹美制粗螺纹

规格（UNC）二级牙钻孔径

2.7 - 2.8?英制电器螺 纹

钻孔径

4.0 - 4.2

3.0 - 3.210.466-10.401

3.06 - 3.03

3.49 - 3.45规格

5/16 - 24

6.508-6.648

8.092-8.432钻孔径

?

5.325-5.570公制粗螺 纹

二级牙钻孔径公制细螺 纹

二级牙钻孔径标准径

2.4 - 2.5滚造径3.128-3.083

3.855-3.805

4.205-4.155公制迫牙丝攻钻孔径(挤压丝锥)

精度等级英制螺纹

2.63 - 2.6011.319-11.749PS 3/8 - 19

PS 1/2 - 14

PS 3/4 - 14

PS 1 - 114.143-4.093

10.037-9.957

7.12-7.07 7.28 - 7.236.30 - 6.255.30- 6.254.36 - 4.34 4.43 - 4.383.45 - 3.41

3.96 - 3.922.56 - 2.53PS 1-1/4 -11

PS1-1/2 - 11

PS2 - 11公制细螺纹

规格标准径二级牙钻孔径

规格（UNF）公制螺纹