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1、螺紋攻牙鉆孔徑和滾造徑對(duì)照表.******本表依據(jù)二級(jí)牙制訂公制粗螺紋公制細(xì)螺紋公制迫牙絲攻鉆孔徑美制迫牙絲攻鉆孔徑英制螺紋二級(jí)牙鉆孔徑二級(jí)牙鉆孔徑精度等級(jí)精度等級(jí)規(guī)格鉆孔徑規(guī)格標(biāo)準(zhǔn)徑規(guī)格標(biāo)準(zhǔn)徑規(guī)格規(guī)格最大最小最大最小G1-G6G7-G8G9G1-G6G7-G8G9硬材軟材M1.0*0.250.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88..NO.2-56UNC1.94....W1/8-402.652.60M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*
2、0.250.960.98..NO.3-482.23....W5/32-323.253.20M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.251.061.08..NO.4-402.50....W3/16-243.753.70M1.4*0.31.101.1421.075M14*1.013.0013.15312.917M1.4*0.31.241.25..NO.5-402.83....W1/4-205.105.00M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*
3、0.351.411.43..NO.6-323.07....W5/16-186.606.50M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7*0.351.511.53..NO.8-323.733.77..W3/8-168.007.90M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0.351.611.63..NO.10-244.244.30..W7/16-149.409.30M2.0*0.41.601.6791.567M16*1.015.0015.15314.91
4、7M2.0*0.41.781.80..NO.12-244.904.96..W1/2-1210.7010.50M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.451.951.98..1/4-20..5.72..W9/16-1212.3012.00M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.42.082.10..5/16-18..7.24..W5/8-1113.7013.50M2.5*0.452.102.1382.013M18*2.016.0016.21
5、015.835M2.5*0.452.252.28..3/8-16..8.748.81W3/4-1016.7016.50M2.6*0.452.202.2382.113M18*1.516.5016.67516.376M2.6*0.452.352.38..7/16-14..10.2010.30W7/8-919.5019.30M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.52.732.75..1/2-13..11.2711.82W1-822.4022.00M3.0*0.62.402.4402.280M20*2.018.
6、0018.21017.835M3.5*0.63.173.20..NO.2-64UNF1.97....W1-1/8-725.0024.80M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.73.623.653.69NO.3-562.27....W1-1/4-728.3028.00M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.84.564.604.64NO.4-482.56....M4.0*0.753.253.3263.106M22*2.020.0020.21
7、019.835M6.0*1.05.455.505.55NO.5-442.86....M4.5*0.753.803.8783.688M22*1.520.5020.67620.376M7.0*1.06.456.506.55NO.6-403.16....M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44NO.8-363.78....M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.59.189.259.32N
