螺纹基本尺寸对照表

（完整版）螺纹基本尺寸对照表英制管螺纹基本尺寸及公差（牙形角552）BSPP基本直径螺纹代号内螺纹A级大径中径小径中径公差小径公差中径公差-0.107-0.125-0.125-0.142-0.142-0.142-0.180-0.180-0.180-0.1809.510.412.712.715.917.520.6基准长度最大4.97.37.710.011.312.715.015.024.1最小3.14.75.16.47.78.110.410.413.614.017.1有效螺纹长度基本6.59.710.119.119.123.426.729.8最大7.411.011.415.016.319.121.421.425.730.233.3最小8.811.412.714.516.816.821.123.226.3圆锥内螺纹基面轴向位移偏差（±mm）1.11.71.72.32.32.93.5美制管螺纹基本尺寸及公差(牙形角60。)UN(F)外螺纹公差等级螺纹代号大径最大最小最大2A中径最小JIC螺纹1〃x14UNF2〃x12UN11.07912.66714.25219.01233.29441.22947.57963.45214.25217.42720.59925.35730.11936.46742.81750.75415.83926.94714.25222.18257.10410.87418.77321.92326.65533.00540.9447.2963.16214.03117.18820.36125.09529.8336.17742.52750.46515.61826.68314.01310.25411.84113.33517.98121.00625.5731.9239.88546.20562.07813.33516.39619.56824.17828.74535.09341.44349.3813.22120.80855.7310.14711.73213.22117.85420.86925.42531.77339.70546.05361.9213.22116.27419.44424.03628.59849.22514.80325.60813.10120.66855.5759.56811.15612.57317.1220.02524.42530.77538.7145.0660.93212.57315.535-0.217大径公差-0.214-0.250-0.250-0.284-0.284-0.284-0.360-0.360-0.360-0.360-0.434-0.434-0.434外螺纹B级中径公差-0.21427.633.94740.29748.23514.16124.7412.3619.66254.5859.72811.32812.75117.32320.26924.68931.03938.98945.33961.21415.74818.92323.44427,86434.21440.56448.51414.35124.96812.57319.93954.86410.03311.60813.08117.67820.67625.14645.79661.67113.08116.10419.27923.82528.32134.67141.02148.97114.68125.37512.92920.39655.32110.28711.87513.37125.61331.96339.90146.25162.12613.37116.43119.60624.22128.78835.13841.48849.42614.95825.78313.25620.85155.77613.5218.18421.22425,80132.15440.09446.44962.33213.5216.58919.76624.40728.97935.33141.68649.62715.1125.96155.97611.11312.714.28819.0522.22526.98833.33841.27547.62563.514.28817.46320.63825.430.16336.51342.86326.98714.28822.22557.15小径最小小径最大最小内螺纹公差等级2B中径最大大径ORFS螺纹SAE螺纹其它美制螺纹注：UNC粗牙螺纹系列，UNF细牙螺纹系列，UNEF超细牙螺纹系列，UN不变螺距系列布锥管螺纹基本尺寸及公差（牙形角602）NPT螺纹代号Zl^ll.5基面上的直径大径10.27213.57217.05521.22326.56833.22841.985中径9.51912.44315.92619.77225.117小径8.76611.31414.79718.32123.66629.69438.451有效长度79.510.513.51417.518螺纹长度管端至基面长5.0806.0968.0288.61110.160Z2〃x11.548.05460.09246.28758.32544.52056.55818.51910.68811.074公制螺纹基本尺寸及公差（牙形角602）M基本直径螺纹代号-0.250-0.284-0.284-0.284-0.360-0.360-0.360-0.360-0.434-0.434-0.434大径公差-0.2140-0.250-0.250-0.284-0.284-0.284-0.360内螺纹公差等级大径中径小径中径公差+0.150+0.160+0,160+0.180+0.180+0,190+0.190+0,190+0,190+0.190+0.190+0.200+0.200+0.200+0.200+0.200+0.200+0.224+0.224+0.224+0.224+0.224+0.224+0.224+0.236+0.236+0.236+0.2366H小径公差+0.236+0.236+0.236+0.300+0.300+0,300+0.300+0.300+0.300+0.300+0.300+0.300+0.300+0.300+0.300+0.300+0.300+0.375+0.375+0.375+0.375+0.375+0.375+0,375+0.375+0.375中径公差+0.190+0.200+0.200+0.224+0.224+0.236+0.236+0.236+0.236+0.236+0.236+0.250+0.250+0.250+0.250+0.250+0.250+0.280+0.280+0.280+0.280+0.280+0.280+0.280+0.300+0.300+0.300+0.3007H小径公差+0.300+0.335+0,335+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.375+0.475+0.475+0.475+0.475+0.475+0.475+0.475+0.475+0.475中径公差-0.026-0.138-0.026-0.144-0.026-0.144-0.028-0.160-0.028-0.160-0.172-0.032-0.172-0.032-0.172-0.032-0.172-0.032-0.172-0.032-0.172-0.032-0.182-0.032-0.182-0.032-0.182-0.032-0.182-0.182-0.032-0.182-0.032-0.182-0.032-0.182-0.038-0.208-0.038-0.208-0.038-0.208-0.038-0.208-0.038-0.208-0.038-0.208-0.038-0.218-0.038-0.218-0.038-0.218-0.038-0.218外螺纹公差等级6g大径公差-0.026-0.206-0.026-0.206-0.026-0.360-0.360-0.434-0.434Gl〃xllG2〃xiiG3”X119.72813.15716.66220.95522.91126.44133.24941.91047.80359.61475.18487.884-0.240-0.028-0.240-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.032-0.268-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318-0.038-0.318M10X1M12X1M14X1M12X1.25M14X1.25M12X1.5M18X1.5M20X1.5M22X1.5M24X1.5M26X1.5M27X1.5M30X1.5M33X1.5M36X1.5M39X1.5M42X1.5M27X2M30X2M33X2M36X2M39X2M42X2M45X2M52X2M64X2M72X2101214121412141618202224262730334227303336394245526064729.35011.35013.35011.18813.18811.02613.02617.02619.02621.02623.02625.02626.02629.02632.02635.02638.02641.02625.70128.70131.70134.70137.70140.70143.70158.70162.70170.7018.91710.91712.91710.64712.64710.37612.37614.37616.37318.37620.37622.37624.37625.37628.37631,37640.37624.83527.83530.83533.83536.83539.83542.83549.83557.83561.835100.3309.14712.30115.80619.79321.74925.27931.77040.43146.32458.13573.70586.40598.8518.56611.44514.95018.63120.58730.29138.95244.85456.65672.22684.92697.372+0.170+0.125+0.125+0.142+0.142+0.142+0.180+0.180+0.180+0.180+0.217+0.217+0.282+0.445+0.445+0.541+0.541+0.541+0.640+0.640+0.640+0.640+0.640+0.640+0.640英制锥管螺纹基