公制(米制)螺纹极限尺寸(3)

内螺纹 外螺纹 极限尺寸

毛坯极限尺寸参考大径尺寸（非挤压加工）；螺纹山角度：60°公称直径 d

螺距 P

dmax

22.51

24

1.5231

252627

1.521.511.523

28

11.5211.5

30

233.5

32

1.521.5

33

233.5

3536

1.51.5234

38

1.521.96221.95823.97423.96823.96223.95224.97424.96824.96225.96826.97426.96826.96226.95227.97427.96827.96229.97429.96829.96229.95229.94731.96831.96232.96832.96232.95232.94734.96835.96835.96235.95235.9437.968大径dmin21.68221.62323.79423.73223.68223.57724.79424.73224.68225.73226.79426.73226.68226.57727.79427.73227.68229.79429.73229.68229.57729.52231.73231.68232.73232.68232.57732.52234.73235.73235.68235.57735.46537.732中径d2min20.50320.16423.19922.84422.49321.80324.19923.84423.49324.84426.19925.84425.49324.80327.19926.84426.49329.19928.84428.49327.80327.46230.84430.49331.84431.49330.80330.46233.84434.84434.49333.80333.11836.844单位：mm小径d3max19.50818.89122.74722.12821.50820.27123.74723.12822.50824.12825.74725.12824.50823.27126.74726.12825.50828.74728.12827.50826.27125.65330.12829.50831.12830.50829.27128.65333.34434.12833.50832.27131.03336.128涂色部螺距为非常用规格；螺纹山角度：60°。大 径Dmin22222424242425252526272727272828283030303030323233333333353636363638中径D2min20.70120.37623.3523.02622.70122.05124.3524.02623.70125.02626.3526.02625.70125.05127.3527.02626.70129.3529.02628.70128.05127.72731.02630.70132.02631.70131.05130.72734.02635.02634.70134.05133.40237.026小径D1min19.83519.29422.91722.37621.83520.75223.91723.37622.83524.37625.91725.37624.83523.75226.91726.37625.83528.91728.37627.83526.75226.21130.37629.83531.37630.83529.75229.21133.37634.37633.83532.75231.6736.376钻头径

公差0.3750.450.2360.30.3750.50.2360.30.3750.3-0.7640.30.3750.50.2360.30.3750.2360.30.3750.50.560.30.3750.30.3750.50.560.30.30.3750.50.60.334.534333236.52019.52322.522212423.52324.52625.525242726.5262928.5282726.530.53031.5313029.5

公差0.280.3350.180.2360.280.3750.180.2360.280.2360.180.2360.280.3750.180.2360.280.180.2360.280.3750.4250.2360.280.2360.280.3750.4250.2360.2360.280.3750.4750.236d2max20.66320.33423.32422.99422.66322.00324.32423.99423.66324.99426.32425.99425.66325.00327.32426.99426.66329.32428.99428.66328.00327.67430.99430.6631.99431.66331.00330.67433.99434.99434.66334.00333.34236.994公差0.160.170.1250.150.170.20.1250.150.170.150.1250.150.170.20.1250.150.170.1250.150.170.20.2120.150.1670.150.170.20.2120.150.150.170.20.2240.15D2max20.91320.623.5223.22622.92522.31624.5224.22623.92525.22626.5226.22625.92525.31627.5227.22626.92529.5229.22628.92528.31628.00731.22630.92532.22631.92531.31631.00734.22635.22634.92534.31633.70237.226公差0.2120.2240.170.20.2240.2650.170.20.2240.20.170.20.2240.2650.170.20.2240.170.20.2240.2650.280.20.2240.20.2240.2650.280.20.20.2240.2650.30.2D1max20.2119.74423.15322.67622.2121.25224.15323.67623.2124.67625.15325.67625.2124.25227.15326.67626.2129.15328.67628.2127.25226.77130.67630.2131.67631.2130.25229.77133.67634.67634.2133.25232.2736.676