公制(米制)螺纹极限尺寸(4)

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

39

螺距 P

dmax

2341.5

40

231.52

42

344.51.52

45

344.51.52

48

3451.5

50

231.52

52

3451.5

55

2341.538.96238.85238.9439.96839.96239.95241.96841.96241.95241.9441.93744.96844.96244.95244.9444.93747.96847.96247.95247.9447.92949.96849.96249.95251.96851.96251.95251.9451.92954.96854.96254.95254.9455.968大径dmin38.68238.57738.46539.73239.68239.57741.73241.68241.57741.46541.43744.73244.68244.57744.46544.43747.73247.68247.57747.46547.39949.73249.68249.57751.73251.68251.57751.46551.39954.73254.68254.57754.46555.732中径d2min37.49336.80336.11838.84438.49337.80340.84440.49339.80339.11838.77843.84443.49342.80342.11841.77846.83446.48345.79145.10644.43148.83448.48347.79150.83450.48349.79149.10648.43153.83453.48352.79152.10654.834单位：mm小径d3max36.50835.27134.03338.12837.50836.27140.12839.50838.27137.03336.41643.12842.50841.27140.03339.41646.12845.50844.27143.03341.79548.12847.50846.27150.12849.50848.27147.03345.79553.12852.50851.27150.03354.128涂色部螺距为非常用规格；螺纹山角度：60°。大 径Dmin39393940404042424242424545454545484848484850505052525252525555555556中径D2min37.70137.05136.40239.02638.70138.05141.02640.70110.05139.40239.07744.02643.70143.05142.40242.07747.02646.70146.05145.40244.75249.02648.70148.05151.02650.70150.05149.40248.75254.02653.70153.05152.40255.026小径D1min36.83535.75234.6738.37637.83536.75240.37639.83538.75237.6737.12943.37642.83541.75240.6740.12946.37645.83544.75243.6742.25748.37647.83546.75250.37649.83548.75247.6746.58753.37652.83551.75250.6754.376钻头径

公差0.3750.50.60.330.3750.50.30.3750.50.60.670.30.3750.50.60.670.30.3750.50.61.040.30.3750.50.30.3750.50.60.710.30.3750.50.60.337363538.5383740.540393837.543.543424140.546.54645444348.5484750.55049484753.553525154.5公差0.280.2750.4750.2360.280.3750.2360.280.3750.4750.50.2360.280.3750.4750.50.2360.280.3750.4750.530.2360.280.3750.2360.280.3750.4750.530.2360.280.3750.4750.236d2max37.66337.00336.34238.99438.66338.00340.99440.66340.00339.34239.01443.99443.66343.00342.34242.01446.99446.66346.00345.34244.68148.99448.66348.00350.99450.66350.00349.34248.68153.99453.66353.00352.34254.994公差0.170.20.2240.150.170.20.150.170.20.2240.2360.150.170.20.2240.2360.160.180.2120.2360.250.160.180.2120.160.180.2120.2360.250.160.180.2120.2360.16D2max37.92537.31636.70239.22638.92538.31641.22640.92540.31639.70239.39244.22643.92543.31642.70242.39247.23846.93746.33145.71745.08749.23848.93748.33151.23850.93750.33149.71749.08754.23853.93753.33152.71755.238公差0.2240.2650.30.20.2240.2650.20.22430.2650.30.3150.20.2240.2650.30.3150.2120.2360.280.3150.3350.2120.2360.280.2120.2360.280.3150.3350.2120.2360.280.3150.212D1max37.2136.25235.2738.67668.2137.25240.67640.2139.25238.2737.79943.67643.2142.25241.2740.79946.67646.2145.25244.2743.29748.67648.2147.25250.67650.2149.25248.2747.29753.67653.2152.25251.2754.676