螺纹钻孔直径对照表.docx

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1、公制螺纹公制细牙螺纹规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小M10.750.7850.729M1*0.20.80.8210.783M21.61.6791.567M2*0.251.7251.7851.729M32.52.5992.459M3*0.352.72.7212.621M43.33.4223.242M4*0.53.53.5993.459M54.24.3344.134M5*0.54.54.5994.459M655.1534.917M6*0.755.35.3785.188M766.1535.917M7*0.756.36.3786.188M86.86.9126.64

2、7M8*177.1536.917M108.58.6768.376M8*0.757.37.3787.188M1210.2510.44110.106M10*1.258.88.9128.647M141212.2111.835M10*199.1538.917M161414.2113.835M10*0.759.39.3789.188M1815.515.74415.294M12*1.510.510.67610.376M2017.517.74417.294M12*1.2510.810.91210.647M2219.519.74419.294M12*11111.15310.917M242121.

3、25220.752M14*1.512.512.67612.376M272424.25223.752M14*1.2512.812.91212.647M3026.526.77126.211M14*11313.15312.917M3329.529.77129.211M16*1.514.514.67614.376M363232.2731.67M16*11515.15314.917M393535.2734.67M18*21616.2115.835M18*1.516.516.67616.376M18*11717.15316.917M20*21818.2117.835M20*1.518.518

4、.67618.376M20*11919.15318.917M22*22020.2119.835M22*1.520.520.67620.376M22*12121.15320.917M24*22222.2121.835M24*1.522.522.67622.376M24*12323.15322.917M27*22525.2124.835M27*1.525.525.67625.376M27*12626.15325.917M30*32727.25226.752M30*22828.2127.835M30*1.528.528.67628.376M30*12929.15328.9175555°

5、圆锥内螺纹（Rc)°圆柱内螺纹（Rp)规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小1/16-286.56.6326.491/16-286.36.3846.2441/8-288.58.6378.4951/8-288.38.3888.2491/4-1911.411.54911.3411/4-191111.17410.9623/8-1914.915.04514.8463/8-1914.514.65814.4481/2-1418.618.77318.4891/2-1418.118.26317.9793/4-142424.25923.9753/4-1423.523.66323.

6、3781-1130.230.47230.111-1129.629.82229.45911/4-1138.839.13338.77111/4-1138.238.33937.97611/2-1144.745.02644.66411/2-114444.23243.8692-1156.556.83756.4752-1155.655.84455.412螺纹钻孔直径对照表55°非密封圆柱内螺纹（G)60°圆锥内螺纹（NPT)规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小1/16-286.76.8436.5611/16-276.1356.2236.0461/8-288.78.8488

7、.5661/8-278.488.5688.3931/4-1911.711.8911.4451/4-1810.99611.12810.8643/8-1915.215.39514.953/8-1814.41614.28414.5481/2-141919.17218.6311/2-1417.81317.64217.9835/8-142121.12820.5873/4-1423.12723.29722.9573/4-1424.524.65824.1171-11.529.05929.266