螺丝攻牙孔径对照表.pdf

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1、螺丝攻牙钻孔径对照表美制（粗）挤牙丝攻钻孔径公制挤牙丝攻钻孔径美制细牙螺纹公制粗牙螺纹公制细牙螺纹规格精度maxmin规格精度maxmin2级牙钻孔径2级牙钻孔径2级牙钻孔径规格标准径规格标准径规格标准径2-56UNCRH42.021.96M1.00.25RH40.920.90最大最小最大最小最大最小3-48RH42.322.25M1.10.25RH41.021.00螺丝牙外径M1.00.250.750.7850.729M7.00.506.506.5506.4004-40RH52.602.52M1.20.25RH41.121.10No.0-80（1.52

2、4）1.251.3051.182M1.10.250.850.8850.829M8.01.007.007.1536.9175-40RH52.932.86M1.40.30RH41.2941.270No.1-72（1.854）1.551.6121.474M1.20.250.950.9850.929M8.00.757.307.3787.1886-32RH53.173.09M1.60.35RH41.451.40No.2-64（2.184）1.851.9121.756M1.40.301.101.1421.075M8.00.507.507.5207.4008-32RH

3、63.833.75M1.70.35RH41.581.54No.3-56（2.515）2.102.1972.025M1.60.351.251.3211.221M9.01.008.008.1537.91710-24RH64.354.26M2.00.40RH41.851.81No.4-48（2.845）2.402.4582.271M1.70.351.351.4211.321M9.00.758.308.3788.18812-24RH65.014.92M2.30.40RH42.152.11No.5-44（3.175）2.702.7402.551M1.80.351.

4、451.5211.421M10.01.258.808.9128.6471/4-20RH65.765.66M2.50.45RH42.332.28No.6-40（3.505）2.903.0222.820M2.00.401.601.6791.567M10.01.009.009.1538.9175/16-18RH77.297.18M2.60.45RH42.432.38No.8-36（4.166）3.503.6063.404M2.20.451.751.8381.713M10.00.759.309.3789.1883/8-16RH78.788.66M3.00.50R

5、H52.812.76No.10-32（4.826）4.104.1653.963M2.30.401.901.9791.867M10.00.509.509.5209.4007/16-14RH710.2510.11M3.50.60RH53.263.20No.12-28（5.486）4.604.7244.496M2.50.452.102.1382.013M11.01.0010.0010.1539.9171/2-13RH811.7811.62M4.00.70RH63.703.651/4-285.505.5885.360M2.60.452.202.2382.113M

6、11.00.7510.3010.37810.1889/16-12RH1013.2713.14M5.00.80RH64.664.595/16-246.907.0356.782M3.00.502.502.5992.459M12.01.5010.5010.67610.3765/8-11RH1114.7614.62M6.01.00RH75.575.483/8-248.508.6368.382M3.50.602.903.0102.850M12.01.2510.8010.91210.6473/4-10RH1217.8817.67M7.01.00RH76.576.48

7、7/16-209.9010.0339.729M4.00.703.303.4223.242M12.01.0011.0011.15310.9177/8-9RH1220.8520.68M8.01.00RH77.577.481/2-2011.5011.60711.329M4.50.753.803.8783.688M12.00.5011.5011.52011.4001-8RH1323.8423.65M8.01.25RH77.417.349/16-1812.9013.08112.751M5.00.804.204.3344.134M14.01.5012.5012.67

8、612.376M101.00RH79.579.485/8-1814.5014.6