公制(米制)螺纹极限尺寸(9)

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

3

190

4683

195

463

200

468

189.952189.94189.92189.9194.952194.94194.92199.952199.94199.92199.9

大径dmin189.577189.465189.32189.19194.577194.465194.32199.577199.465199.32199.19

中径d2min187.753187.062185.708184.349192.753192.062190.708197.753197.062195.708194.349

单位：mm小径d3max186.271185.033182.559180.085191.271190.033187.559196.271195.033192.559190.085

涂色部螺距为非常用规格；螺纹山角度：60°。大 径Dmin190190190190195195195200200200200

中径D2min188.051187.402186.103184.804193.051192.402191.103198.051197.402196.103194.804

小径D1min186.752185.67183.505181.34191.752190.67188.505196.752195.67193.505191.34

钻头径

公差0.50.60.810.50.60.80.50.60.81

187186184182192191189197196194192

公差0.3750.4750.60.710.3750.4750.60.3750.4750.60.71

d2max188.003187.32186.023184.704193.003192.342191.023198.003197.342196.023194.704

公差0.250.2580.3150.3550.250.280.3150.250.280.3150.355

D2max188.386187.777186.528185.279193.386192.777191.528198.386197.777196.528195.279

公差0.3350.3750.4250.4750.3350.3750.4250.3350.3750.4250.475

D1max187.252186.27184.305182.34192.252191.27189.305197.252196.27194.305192.34