英制管螺紋基本尺寸及其公差.pdf

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1、55o英制管螺紋的基本尺寸及其公差(GB/T7306-2000)外螺紋的有效螺紋不圓柱內(nèi)螺紋直徑的螺紋基準(zhǔn)平面內(nèi)的基本直徑基準(zhǔn)距離對(duì)應(yīng)牙數(shù)螺距圓弧底孔小于極限偏差±T2/2尺寸牙高裝配余量通經(jīng)(n)(P)尺寸尺寸極限偏差代號(hào)大徑中徑小徑基本最大最小基本最大最小徑向軸向±T1/2inmmmmmmmmmmmmmmmmmm圈數(shù)mmmmmm圈數(shù)mmmmmmmm圈數(shù)1/16280.9070.5817.7237.1426.5610.1256.440.914.93.12.52?6.57.45.60.0711?1/86A280.9070.5819.7289.147

2、8.5660.1258.440.914.93.12.52?6.57.45.60.0711?1/48A191.3370.85613.15712.311.450.18411.261.317.34.73.72?9.7118.40.1041?3/810A191.3370.85616.66215.8114.950.18414.756.41.317.75.13.72?10.111.48.80.1041?1/215A141.8141.16220.99519.7918.630.24918.258.21.81106.452?13.21511.40.1421?3/42

3、0A141.8141.16226.44125.2824.120.24923.759.51.8111.37.752?14.516.312.70.1421?125A112.3091.47933.24931.7730.290.3173010.42.3112.78.16.42?16.819.114.50.181?1?32A112.3091.47941.9140.4338.950.31738.512.72.311510.46.42?19.121.416.80.181?1?40A112.3091.47947.80346.3244.850.31744.512.7

4、2.311510.46.42?19.121.416.80.181?250A112.3091.47959.61458.1456.660.3175615.92.3118.213.67.53?23.425.721.10.181?2?65A112.3091.47975.18473.7172.230.3177117.53.51?21149.2426.730.223.20.2161?380A112.3091.47987.88486.4184.930.31785.520.63.51?24.117.19.2429.833.326.30.2161?3?112.309

5、1.479100.3398.8597.370.3173.51?0.2161?4100A112.3091.479113.03111.6110.10.317110.525.43.51?28.921.910.44?35.839.332.30.2161?5125A112.3091.479138.43137135.50.31713628.63.51?32.125.111.5540.143.636.60.2161?6150A112.3091.479163.83162.4160.90.317161.528.63.51?32.125.111.5540.143.63

6、6.60.2161?備注：圓柱內(nèi)螺紋：Rp圓錐內(nèi)螺紋：Rc圓錐外螺紋：R1(與圓柱內(nèi)螺紋配合)R2（與圓錐內(nèi)螺紋配合）