公制(米制)螺纹极限尺寸(5)

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

56

螺距 P

dmax

345.51.5

58

2341.52

60

345.51.5

62

2341.52

64

3461.5

65

2341.52

68

3461.5

70

23455.95255.9455.92557.96857.96257.95257.9459.96859.96259.95259.9459.92561.96861.96261.95261.9463.96863.96263.95293.9463.9264.96864.96264.95264.9467.96867.96267.95267.9467.9269.96869.96269.95269.94大径dmin55.57755.46555.36557.73257.68257.57757.46559.73259.68259.57759.46559.36561.73261.68261.57761.46563.73263.68263.57763.46563.3264.73264.68264.57764.46567.73267.68267.57767.46567.3269.73269.68267.57769.465中径d2min53.79153.10652.08856.83456.48355.79155.10658.83458.48357.79157.10656.08860.83460.48359.79159.10662.83462.48361.79161.10659.74363.83463.48362.79162.10666.83466.48365.79165.10663.74368.83468.48367.79167.106单位：mm小径d3max52.27151.03349.17756.12855.50854.27153.03358.12857.50856.27155.03353.17760.12859.50858.27157.03362.12861.50860.27159.03356.55963.12862.50861.27160.03366.12865.50864.27163.03360.55968.12867.50866.27165.033涂色部螺距为非常用规格；螺纹山角度：60°。大 径Dmin56565658585858606060606062626262646464646465656565686868686870707070中径D2min54.05153.40252.42857.02656.70156.05155.40259.02658.70158.05157.40256.42861.02660.70160.05159.40263.02662.70162.05161.40260.10364.02663.70163.05162.40267.02666.70166.05165.40264.10369.02668.70168.05167.402小径D1min52.75251.6750.04656.37655.83554.75253.6758.37657.83556.75255.6754.04660.37659.83558.75257.6762.37661.83560.75259.6757.50563.37662.83561.75260.6766.37665.83564.75263.6761.50568.37667.83566.75265.67钻头径

公差0.50.60.750.30.3750.50.60.30.375-29.50.60.750.30.3750.50.60.30.3750.50.60.80.30.3750.50.60.30.3750.50.60.80.30.3750.50.6535250.556.556555458.558575654.560.560595862.56261605863.563626166.56665646268.5686766公差0.3750.4750.560.2360.280.3750.4750.2360.280.3750.4750.560.2360.280.3750.4750.2360.280.37530.4750.60.2360.280.3750.4750.2360.280.3750.4750.60.2360.282.3750.475d2max54.00353.34252.35356.99456.66356.00355.34258.99458.66358.00357.34256.35360.99460.66360.00359.34262.99462.66362.00361.34260.02363.99463.66363.00362.34266.99466.66366.00365.34264.02368.99468.66368.00367.342公差0.2120.2360.2650.160.180.2120.2360.160.180.2120.2360.2650.160.180.2120.2360.160.180.2120.2360.280.160.180.2120.2360.160.180.2120.2360.280.160.180.2120.236D2max54.33153.71752.78357.23856.93756.33155.71759.23858.93758.33157.71756.78361.23860.93760.33159.71763.23862.93762.33161.71760.47864.23863.93763.33162.71767.23866.93766.33165.71764.47869.23868.93768.33167.717公差0.280.3150.3550.2120.2360.280.3150.2120.2360.280.3150.3550.2120.2360.280.3150.2120.2360.280.3150.3750.2120.2360.280.3150.2120.2360.280.3150.3750.2120.2360.280.315D1max53.25252.2750.79656.67656.2155.25254.2758.67658.2127.25256.2754.79660.67660.2159.25258.2762.67662.2161.25260.2758.30563.67663.2162.25261.2766.67666.2165.25264.2762.30568.67668.2167.25266.27