公制(米制)螺纹极限尺寸(2)

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

1.250.75

9

11.250.75

10

11.251.50.75

11

11.51

12

1.251.51.751

1415

1.5211.51

1617

1.5211.51

18

1.522.51

20

1.522.51

7.9728.9788.9748.9729.9789.9749.9729.96810.97810.97410.96811.97411.97211.96811.96613.97413.96813.96214.97414.96815.97415.96815.96216.97416.96817.97417.96817.96217.95819.97419.96819.96219.95821.974大径dmin7.768.8388.7948.769.8389.7949.769.73210.83810.79410.73211.79411.7611.73211.70113.79413.73213.68214.79414.73215.79415.73215.68216.79416.73217.79417.73217.68217.62319.79419.73219.68219.62321.794中径d2min7.0428.3918.2128.0429.3919.2129.0428.86210.39110.2129.86211.20611.02810.85410.67913.20612.85412.50314.20613.85415.20614.85414.50316.20615.85417.20616.85416.50316.16419.20618.85418.50318.16421.206单位：mm小径d3max

6.4388.0587.7477.4389.0588.7478.4388.12810.0589.7479.12810.74710.43810.1289.81912.74712.12811.50813.74713.12814.74714.12813.50815.74715.12816.74716.12815.50814.89118.74718.12817.50816.89120.747涂色部螺距为非常用规格；螺纹山角度：60°。大 径Dmin8999101010101111111212121214141415151616161717181818182020202022中径D2min7.1888.5138.358.1889.5139.359.1889.02610.51310.3510.02611.3511.18811.02610.86313.3513.02612.07114.3514.02615.3515.02614.70116.3516.02617.3517.02616.70116.37619.3519.02618.70118.37621.35小径D1min6.6478.1887.9177.6479.1888.9178.6478.37610.1889.9179.37610.91710.64710.37610.10612.91713.37611.83513.91713.37614.91414.37613.83515.91715.37616.91716.37615.83515.29418.91718.37617.83517.29420.917钻头径

公差0.2650.190.2360.2650.190.2360.2650.30.190.2360.30.2360.2650.30.3350.236-0.70.3750.2360.30.2390.30.3750.2360.30.2360.30.3750.450.2360.30.3750.450.2366.88.287.89.298.88.510.2109.51110.810.510.31312.5121413.51514.5141615.51716.51615.51918.51817.521公差0.2120.140.180.2120.140.180.2120.2360.140.180.2360.180.2120.2360.2650.180.2360.280.180.2360.180.2360.280.180.2360.180.2360.280.3350.180.2360.280.3350.18d2max7.168.4918.3248.169.4919.3249.168.99410.49110.3249.99411.32411.1610.99410.82913.32412.99412.66314.32413.99415.32414.99414.66316.32415.99417.32416.99416.66316.33419.32418.99418.66318.33421.324公差0.1180.10.1120.1180.10.1120.1180.1320.10.1120.1320.1180.1320.140.150.1180.140.160.1180.140.1180.140.160.1180.140.1180.140.160.170.1180.140.160.170.118D2max7.3488.6458.58.3489.6459.59.3489.20610.64510.510.20611.5111.36811.21611.06313.5113.21612.91314.5114.21615.5115.21614.91316.5116.21617.5117.21616.91316.619.5119.21618.91318.621.51公差0.160.1320.150.160.1320.150.160.180.1320.150.180.160.180.190.20.160.190.8420.160.190.160.190.2120.160.190.160.190.2120.2240.160.190.2120.2240.16D1max6.9128.3788.1537.9129.3789.1538.9128.67610.37810.1539.67611.15310.91210.67610.44113.15312.67612.2114.15313.67615.15314.67614.2116.15315.67617.15316.67616.2115.74419.15318.67618.2117.74421.153