螺丝攻牙钻孔径对照表

公制粗螺纹

规 格标准径2级牙钻孔径

最大最小

M1.0*0.250.750.7850.729

M1.1*0.250.850.8850.829

M1.2*0.250.950.9850.929

M1.4*0.31.101.1421.075

M1.6*0.351.251.3211.221

M1.7*0.351.351.4211.321

M1.8*0.351.451.5211.421

M2.0*0.41.601.6791.568

M2.2*0.451.751.8381.713

M2.3*0.41.901.9791.867

M2.5*0.452.102.1382.013

M2.6*0.42.202.2382.113

M3.0*0.52.502.5992.459

M3.5*0.62.903.0102.850

M4.0*0.73.303.4223.242

M4.5*0.753.803.8783.688

M5.0*0.84.204.3344.134

M6.0*1.05.005.1534.917

M7.0*1.06.006.1535.917

M8.0*1.256.806.9126.647

M9.0*1.257.807.9127.647

M10.0*1.58.508.6768.376

M11.0*1.59.509.6769.376

M12.0*1.7510.3010.44110.106

M14.0*2.012.0012.21911.835

M16.0*2.014.0014.21013.835

M18.0*2.515.5015.74415.294

M20.0*2.517.5017.74417.294

M22.0*2.519.5019.74419.294

M24.0*3.021.0021.25220.752

M27.0*3.024.0024.25223.752

M30.0*3.526.5026.77126.211

螺丝攻牙钻孔径对照表

公制细螺纹

规 格标准径2级牙钻孔径

最大最小

M1.0*0.20.800.8210.783

M1.1*0.20.900.9210.883

M1.2*0.21.001.0210.983

M1.4*0.21.201.2211.183

M1.6*0.21.401.4211.383

M1.7*0.21.451.5001.460

M1.8*0.21.601.6211.583

M2.0*0.251.751.7851.729

M2.2*0.251.951.9851.929

M2.3*0.252.052.0612.001

M2.5*0.352.202.2212.121

M2.6*0.352.202.2462.186

M3.0*0.352.702.7212.621

M3.5*0.353.203.2213.121

M4.0*0.53.503.5993.459

M4.5*0.54.004.0993.959

M5.0*0.54.504.5994.459

M5.5*0.55.005.0994.959

M6.0*0.55.305.3785.188

M7.0*0.756.306.3786.188

M7.0*0.56.506.5506.400

M8.0*1.07.007.1536.917

M8.0*0.757.307.3787.188

M8.0*0.57.507.5207.400

M9.0*1.08.008.1537.917

M9.0*0.758.308.3788.188

M10*1.258.808.9128.647

M10*1.09.009.1538.917

M10*0.759.309.3789.188

M10*0.59.509.5209.400

M11*1.010.0010.1539.92

M11*0.7510.3010.37810.188

M12*1.510.5010.67610.376

M12*1.2510.8010.91210.647

M12*1.011.0011.15310.917

M12*0.511.5011.52011.400

M14*1.512.5012.67612.376

M14*1.013.0013.15312.917

M15*1.513.5013.67613.376

M15*1.014.0014.15313.917

M16*1.514.5014.67614.376

M16*1.015.0016.15314.917

M17*1.515.5015.67615.376

M17*1.016.0016.15315.917

M18*2.016.0016.21015.835

M18*1.516.5016.67616.376

M18*1.017.0017.15316.917

M20*2.018.0018.21017.835

M20*1.518.5018.67618.376

M20*1.019.0019.15318.917

M22*2.020.0020.21019.835

M22*1.520.5020.67620.376

M22*1.021.0021.15320.917

M24*2.022.0022.21021.835

M24*1.522.5022.67622.376

M24*1.023.0023.15322.917

M25*2.023.0023.21022.835

M25*1.523.5023.67623.376

M25*1.024.0024.15323.917

M26*1.524.5024.67624.376

M27*2.025.0025.21024.835

M27*1.525.5025.67625.376

M27*1.026.0026.15325.917

M28*2.026.0026.21025.835

M28*1.526.5026.67626.376

M28*1.027.0027.15326.917

M30*3.027.0027.25226.752

M30*2.028.0028.21027.835

M30*1.528.5028.67628.376

M30*1.029.0029.15328.917

M32*2.030.0030.21029.835

M32*1.530.5030.67630.376

M33*3.030.0030.25229.752

M33*2.031.0031.21030.835

M33*1.531.5031.67631.376

M35*1.533.5033.67633.376

M36*3.033.0033.25232.752

M36*2.034.0034.21033.835

M36*1.534.5034.67634.376

英制螺纹

规 格钻孔径

硬材软材

W1/8-402.65

2.600

W5/32-323.253.200

W3/16-243.753.700

W1/4-205.105.000

W5/16-186.606.500

W3/8-168.007.900

W7/16-149.409.300

W1/2-1210.7010.500

W9/16-1212.3012.000

W5/8-1113.7013.500

W3/4-1016.7016.500

W7/8-919.5019.300

W1-822.4022.000

W1-1/8-725.0024.800

W1-1/4-728.3028.000

美制细螺纹

规 格标准径2级牙钻孔径

最大最小

螺丝外牙径

No. 0-80(1.524)1.251.3051.182

No. 1-72(1.854)1.551.6121.474

No. 2-64(2.184)1.851.9121.756

No. 3-56(2.515)2.102.1972.025

No. 4-48(2.845)2.402.4582.271

No. 5-44(3.175)2.702.7402.551

No. 6-40(3.505)2.903.2202.820

No. 8-36(4.166)3.503.6063.404

No. 10-32(4.826)4.104.1653.963

No. 12-28(5.846)4.604.7244.496

1/4-285.505.5885.360

5/16-246.907.0356.782

3/8-248.508.6368.382

7/16-209.9010.0339.729

1/2-2011.5011.60711.329

9/16-1812.9013.08112.751

5/8-1814.5014.68114.351

3/4-1617.5017.67817.323

7/8-1420.5020.67520.270

1-1223.2023.57123.144

1-1/8-1226.5026.74626.289

1-1/4-1229.5029.92129.464

1-3/8-1232.8033.09632.639

1-1/2-1236.0026.27135.814

美制粗螺纹

规 格标准径2级牙钻孔径

最大最小

No. 1-64(1.854)1.551.5821.425

No. 2-56(2.184)1.801.8711.695

No. 3-48(2.515)2.102.1461.941

No. 4-40(2.845)2.302.3852.157

No. 5-40(3.175)2.602.6972.487

No. 6-32(3.505)2.802.8952.642

No. 8-32(4.166)3.403.5303.302

No. 10-24(4.826)3.903.9623.683

No. 12-24(5.486)4.504.5974.344

1/4-205.105.2574.979

5/16-186.606.7316.401

3/8-168.008.1537.798

7/16-149.409.5509.144

1/2-1310.8011.02310.592

9/16-1212.2012.44611.989

5/8-1113.6012.86813.386

3/4-1016.5018.84016.307

7/8-919.5019.76119.177

1-822.2022.60621.971

1-1/8-725.0025.34924.638

1-1/4-728.2028.25427.813

1-3/8-630.8031.11530.353

1-1/2-634.0034.29033.528

1-3/4-539.5039.82738.964

2-4-1/245.2045.59344.679

美制特细螺纹

规 格标准径2级牙钻孔径

最大最小

No. 12-324.704.8264.623

1/4-325.605.6905.486

5/16-327.107.2647.087

3/8-328.708.8658.661

7/16-2810.2010.33810.135

1/2-2811.8011.93811.709

9/16-2413.2013.38613.132

5/8-2414.8014.98614.732

3/4-2017.8017.95817.678

7/8-2021.0021.13320.853

1-2024.0024.30824.028

英制管螺纹

规 格标准径2级牙钻孔径

最大最小

1/16-286.506.6326.490

1/8-288.508.6378.495

1/4-1911.4011.54911.341

3/8-1915.0015.05414.846

1/2-1418.5018.77318.489

3/4-1424.0024.25923.975

1-1130.2030.47130.111

1-1/4-1138.8039.13238.772

1-1/2-1144.8045.02544.665

2-1156.5056.83656.476

美制管螺纹

规 格钻 孔 径

NPTNPS

使用绞刀时不用绞刀时

1/16-276.106.2506.350

1/8-278.338.4308.740

1/4-1810.7211.13011.130

3/8-1814.2714.27014.680

1/2-1417.4817.86018.260

3/4-1422.6323001.00023.420

1-11-1/228.5828.98029.360

1-1/4-11-1/237.3137.69038.100

1-1/2-11-1/243.6644.04044.450

2-11-1/255.5855.96056.360

公制迫牙丝攻钻孔径

规 格精 度 等 级

G4-G6G7-G8G9

M1.0*0.250.860.880—

M1.1*0.250.960.980—

M1.2*0.251.061.080—

M1.4*0.31.241.250—

M1.6*0.351.411.430—

M1.7*0.351.511.530—

M1.8*0.351.611.630—

M2.0*0.41.781.800—

M2.2*0.451.951.980—

M2.3*0.42.082.100—

M2.5*0.452.252.280—

M2.6*0.452.352.380—

M3.0*0.52.732.750—

M3.5*0.63.173.200—

M4.0*0.73.623.6503.690

M5.0*0.84.564.6004.640

M6.0*1.05.455.5005.550

M7.0*1.06.456.5006.550

M8.0*1.257.317.3807.440

M10*1.59.189.2509.320

M10*1.259.319.3809.440

M12*1.7511.0411.12011.210

M12*1.2511.3111.38011.440

美制迫牙丝攻钻孔径

规 格精 度 等 级

G4-G6G7-G8G9

No. 2-56UNC1.94——

No. 3-82.23——

No. 4-402.50——

No. 5-402.83——

No. 6-323.07——

No. 8-323.733.770—

No. 10-244.244.300—

No. 12-244.904.960—

1/4-20—5.720—

5/6-18—7.240—

3/8-16—8.7408.810

7/16-14—10.20010.300

1/2-13—11.27011.820

No. 2-64UNF1.97——

No. 3-562.27——

No. 4-562.56——

No. 5-442.86——

No. 6-403.16——

No. 8-363.78——

No. 10-324.394.430—

No. 12-284.995.040—

1/4-285.855.900—

5/16-247.367.410—

3/8-24—9.000—

7/16-20—10.48010.540

36942.00—12.07012.130