公制(米制)螺纹极限尺寸(6)

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

1.52

72

3461.5

75

2341.52

76

346

78

21.52

80

346

8285

223462

90

3462

95

3462

71.96871.96271.95271.9471.9274.96874.96274.95274.9475.96875.96275.95275.9475.9277.96279.96879.96279.95279.9479.9281.96284.96284.95284.9484.9289.96289.95289.9489.9294.96294.95294.9494.9299.962大径dmin71.73271.68271.57771.46571.3274.73274.68274.57774.46575.73275.68275.57775.46575.3277.68279.73279.68279.57779.46579.3281.68284.68284.57784.46584.3289.68289.57789.46589.3294.68294.57794.46594.3299.682中径d2min70.83470.48369.79169.10667.74373.83473.48372.79172.10674.83474.48373.79173.10671.74376.48378.83478.48377.79177.10675.74380.48383.48382.79182.10680.74388.48387.79187.10685.74393.47392.77992.09290.72398.473单位：mm小径d3max70.12869.50868.27167.03364.55973.12872.50871.27170.03374.12873.50872.27171.03368.55975.50878.12877.50876.27175.03372.55979.50882.50881.27180.03377.55987.50886.27185.03382.55992.50891.27190.03387.55997.508涂色部螺距为非常用规格；螺纹山角度：60°。大 径Dmin727272727275757575767676767678808080808082858585858686868695959595100中径D2min71.02670.70170.05169.40268.10374.02673.70173.05172.40275.02674.70174.05173.40272.10376.70179.02678.70178.05177.40276.10380.70183.70183.05182.40281.10388.70188.05187.40286.10393.70193.05192.40291.10398.701小径D1min70.37569.83568.75267.6765.50573.37672.83571.75270.6774.37673.83572.75271.6769.50575.83578.37677.83576.75275.6773.50579.83582.83581.75280.6778.50587.83586.75285.6783.50592.83591.75290.6788.50597.835钻头径

公差0.30.3750.50.60.80.30.3750.50.60.30.3750.50.60.80.3750.30.3750.50.60.80.3750.3750.50.60.80.3750.50.60.80.3750.50.60.80.37570.57069686673.573727174.5747372707678.5787776748083828179888786839392918998公差0.2360.280.3750.4750.60.2360.280.3750.4750.2360.280.3750.4750.60.280.2360.280.3750.4750.60.280.280.3750.4750.60.280.3750.4750.60.280.3750.4750.60.28d2max70.99470.66370.00369.34268.02373.99473.66373.00372.34274.99474.66374.00373.34272.02376.66378.99478.66378.00377.34276.02380.66383.66383.00382.34281.02388.66388.00387.34286.02393.66393.00392.34291.02398.663公差0.160.180.2120.2360.280.160.180.2120.2360.160.180.2120.2360.280.180.160.180.2120.2360.280.180.180.2120.2360.280.180.2120.2360.280.190.2240.250.30.19D2max71.23870.93770.33169.71768.47874.23873.93773.33172.71775.23874.93774.33173.71772.47876.93779.23878.93778.33177.71776.47880.93783.93783.33182.71781.47888.93788.33187.71786.47893.95193.35192.73791.50398.951公差0.2120.2360.280.3150.3750.2120.2360.280.3150.2120.2360.280.3150.3750.2360.2120.2360.280.3150.3750.2360.2360.280.3150.3750.2360.280.3150.3750.250.30.3350.40.25D1max70.67570.2169.25268.2766.30573.67673.2172.25271.2774.67674.2173.25272.2770.30576.2178.67678.2177.25276.2774.30580.2183.2182.25281.2779.30588.2187.25286.2784.30593.2192.25291.2789.30598.21