普通螺纹基本尺寸.doc

精品文档普通螺纹基本尺寸(GB19681摘录) (mm)H0.866P d2=d0.6495P d1=d1.0825P D、d内、外螺纹大径D2、d2内、外螺纹中径 D1、d1内、外螺纹小径 P螺距 标记示例：M206H公称直径20粗牙右旋内螺纹,中径和大径公差带均为6HM206g公称直径20粗牙右旋外螺纹,中径和大径公差带为6gM206H/6g(上述规格的螺纹副)M202左5g 6gS公称直径20、螺距2细牙左旋外螺纹,中径和大径公差带分别为5g、6g，短旋合长度公称直径D、d螺距P中径D2、d2小径D1、d1公称直径D、d螺距P中径D2、d2小径D1、d1公称直径D、d螺距P中径D2、d2小径D1、d1第一系列第二系列第一系列第二系列第一系列第二系列30.50.352.6752.7732.4592.621181.5117.02617.35016.37616.9173921.537.70138.02636.83537.3763.5( 0.6)0.353.1103.2732.8503.121202.521.5118.37618.70119.02619.35017.29417.83518.37618.917424.5321.539.07740.05140.70141.02637.12938.75239.83540.37640.70.53.5453.6753.2423.4594.5(0.75)0.54.0134.1753.6883.959222.521.5120.37620.70121.02621.350.19.29419.83520.37620.917454.5321.542.07743.05143.70144.02640.12941.75242.83543.37650.80.54.4804.6754.1344.459610.755.3505.5134.9175.18824321.5122.05122.70123.02623.35020.75221.83522.37622.917484321.544.75246.05146.70147.02642.58744.75245.83546.37681.2510.757.1887.3507.5136.6476.9177.18827321.5125.05125.70126.02626.35023.75224.83525.37625.917525321.548.75250.05150.70151.02646.58748.75249.83550.376101.51.2510.759.0269.1889.3509.5138.3768.6478.9179.188303.521.5127.72728.70129.02629.35026.21127.85328.37628.917565.54321.552.42853.40254.05154.70155.02650.04651.67052.75253.83554.376121.751.51.25110.86311.02611.18811.35010.10610.37610.64710.917333.521.530.72731.70132.02629.21130.83531.3761421.5112.70113.02613.35011.83512.37612.91760(5.5)4321.556.42857.40258.05158.70159.02654.04655.67056.75257.83558.376364321.533.40234.05134.70135.02631.67032.75233.83534.3761621.5114.70115.02615.35013.83514.37614.9176464360.10361.40262.05157.50559.67060.752182.5216.37616.70115.29415.835394336.40237.05134.67035.572注：1“螺距P”栏中第一个数值为粗牙螺距，其余为细牙螺距。2优先选用第一系列，其次第二