当前类别：首页 >> 机械工程宝库 >> 公制及美制螺纹钻孔及滚丝径查询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M1.0×0.250.75 0.785 0.729 NO.1-64(1.854)1.55 1.5821.425M1.1×0.250.85 0.885 0.829 NO.2-56(2.184)1.80 1.8711.695M1.2×0.250.95 0.985 0.985 NO.3-48(2.515)2.10 2.1461.941M1.4×0.31.10 1.142 1.075 NO.4-40(2.845)2.30 2.3852.157M1.6×0.351.25 1.321 1.221 NO.5-40(3.175)2.60 2.6972.487M1.7×0.351.35 1.421 1.321 NO.6-32(3.505)2.80 2.8952.642M1.8×0.351.45 1.521 1.421 NO8-32(4.166)3.40 3.533.302M2.0×0.41.60 1.679 1.567 NO.10-24(4.826)3.90 3.9623.683M2.2×0.451.75 1.838 1.713 NO.12-24(5.486)4.50 4.5974.344M2.3×0.41.90 1.979 1.867 1/4-205.10 5.2574.979M2.5×0.452.10 2.138 2.013 5/16-186.60 6.7316.401M2.6×0.452.20 2.238 2.113 3/8-168.00 8.1537.798M3.0×0.52.50 2.599 2.459 7/16-149.40 9.559.144M3.0×0.62.40 2.440 2.280 1/2-1310.80 11.02310.592M3.5×0.62.90 3.010 2.850 9/16-1212.20 12.44611.989M4.0×0.73.30 3.422 3.242 5/8-1113.60 12.86813.386M4.0×0.753.25 3.326 3.106 3/4-1016.50 18.840 16.307M4.5×0.753.80 3.878 3.688 7/8-919.50 19.761 19.177M5.0×0.84.20 4.334 4.134 122.20 22.606 21.971M5.0×0.94.10 4.170 3.930 1-1/8-725.00 25.349 24.638M6.0×1.05.00 5.153 4.917 1-1/4-728.20 28.524 27.813M7.0×1.06.00 6.153 5.917 1-3/8-630.80 31.115 30.353M8.0×1.256.80 6.912 6.647 1-1/2-634.00 34.290 33.528M9.0×1.257.80 7.912 7.647 1-3/4-539.50 39.827 38.964M10×1.58.50 8.676 8.376 2-4-1/245.20 45.593 44.679M11×1.59.50 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 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 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M1.0×0.20.80 0.8210.783NO.0-80(1.524)1.25 1.3051.182M1.1×0.20.90 0.9210.883NO.1-72(1.854)1.55 1.6121.474M1.2×0.21.00 1.0210.983NO.2-64(2.184)1.85 1.9121.756M1.4×0.21.20 1.2211.183NO.3-56(2.515)2.10 2.1972.025M1.6×0.21.40 1.4211.383NO.4-48(2.845)2.40 2.4582.271M1.7×0.21.45 1.500 1.460 NO.5-44(3.175)2.70 2.740 2.551M1.8×0.21.60 1.621 1.583 NO.6-40(3.505)2.90 3.022 2.820 M2.0×0.251.75 1.785 1.729 NO.8-36(4.166)3.50 3.606 3.404 M2.2×0.251.95 1.985 1.929 NO.10-32(4.826)4.10 4.165 3.963 M2.3×0.252.05 2.061 2.001 NO.12-28(5.846)4.60 4.724 4.496 M2.5×0.352.20 2.221 2.121 1/4-285.50 5.588 5.360 M2.6×0.352.20 2.246 2.186 5/16-246.90 7.035 6.782 M3.0×0.352.70 2.721 2.621 3/8-248.50 8.636 8.382 M3.5×0.353.20 3.221 3.121 7/16-209.90 10.033 9.729 M4.0×0.53.50 3.599 3.459 1/2-2011.50 11.607 11.329 M4.5×0.54.00 4.099 3.959 9/16-1812.90 13.081 12.751 M5.0×0.54.50 4.599 4.459 5/8-1814.50 14.681 14.351 M5.5×0.55.00 5.099 4.959 3/4-1617.50 17.678 17.323 M6.0×0.755.30 5.378 5.188 7/8-1420.50 20.675 20.270 M6.0×0.55.50 5.550 5.400 1-1223.20 23.571 23.114 M7.0×0.756.30 6.378 6.188 1-1/8-1226.50 26.746 26.289 M7.0×0.56.50 6.550 6.400 1-1/4-1229.50 29.921 29.464 M8.0×1.07.00 7.153 6.9171-3/8-1232.80 33.09632.639M8.0×0.757.30 7.378 7.1881-1/2-1236.00 36.27135.814M8.0×0.57.50 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 M10×1.09.00 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 12.376 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.。