名义尺寸BANo. 14No. 13No. 12No. 11No. 10No. 9No. 8No. 7No. 6No. 5No. 4No. 3No. 2No. 1No. 0牙型代号BABABABABABABABABABABABABABABA英制普通螺纹 (惠氏螺纹) -- 小螺纹系列 (BA)每英寸牙大径螺距数中径小径mmmmtpimm外螺纹d=Dpd2=D2d310.23110.40.860.721.20.25101.61.050.91.30.2890.711.130.961.50.3181.931.3151.131.70.3572.571.491.281.90.3965.121.6651.432.20.4359.071.941.682.50.4852.922.211.922.80.5347.922.482.163.20.5943.052.8452.493.60.6638.483.2052.814.10.7334.793.663.224.70.8131.354.2153.735.30.928.224.764.226125.45.44.8牙型高H10.140.150.170.1850.210.2350.260.290.320.3550.3950.440.4850.540.6底孔直径mm0.750.9511.21.351.51.822.32.62.953.43.94.4555°圆锥管螺纹型式和尺寸（2006-03-13 14:38:47 ）螺纹代号基本尺寸英 寸1/16＂1/8＂1/4＂3/8＂1/2＂3/4＂1＂1 1/4＂1 1/2＂2＂2 1/2＂3＂4＂5＂6＂R 1/16R 1/8R 1/4R 3/8R 1/2R 3/4R 1R 1 1/4R 1 1/2R 2R 2 1/2R 3R 4R 5R 6大径mmd=D7.7239.72813.15716.66220.95526.44133.24941.9147.80359.61475.18487.884113.03138.43163.83螺距mmp0.9070.9071.3371.3371.8141.8142.3092.3092.3092.3092.3092.3092.3092.3092.309每英寸牙数tpi282819191414111111111111111111中径mmd2=D27.1429.14712.30115.80619.79325.27931.7740.43146.32458.13573.70586.405111.551136.951162.351小径外螺纹d36.5618.56611.44514.9518.63124.11730.29138.95244.84556.65672.22684.926110.072135.472160.872牙型高度圆弧尺寸H1r0.5810.5810.8560.8561.1621.1621.4791.4791.4791.4791.4791.4791.4791.4791.4790.1250.1250.1840.1840.2490.2490.3170.3170.3170.3170.3170.3170.3170.3170.317底孔尺寸mm6.48.411.214.7518.2523.753038.544.5567185.5110.5136161.5名义尺寸Ww1/16＂3/32＂1/8＂5/32＂3/16＂7/32＂1/4＂5/16＂3/8＂7/16＂1/2＂5/8＂3/4＂7/8＂1＂1 1/8＂1 1/4＂1 3/8＂1 1/2＂1 5/8＂1 3/4＂1 7/8＂2＂2 1/4＂2 1/2＂2 3/4＂3＂3 1/4＂3 1/2＂3 3/4＂4＂4 1/4＂4 1/2＂4 3/4＂5＂5 1/4＂5 1/2＂5 3/4＂6＂牙型代号BSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSWBSW大径mmd=D1.5872.3813.1753.9694.7625.5566.357.9389.52511.11312.715.87619.05122.22625.428.57631.75134.92638.141.27744.45247.62750.80257.15263.50269.85376.20382.55388.90395.254101.604107.954114.304120.665127.005133.355139.705146.055152.406制惠氏螺纹的型式尺寸英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)每英寸牙螺距数中径小径mmtpimm外螺纹pd2=D2d30.423601.3151.050.529482.0411.7030.635402.7682.3620.793323.4592.9521.058244.0843.4071.058244.8784.2011.27205.5374.7241.411187.0346.1311.588168.5097.4921.814149.9518.7892.1171211.3459.992.3091114.39712.9182.541017.42415.7982.822920.41918.6113.175823.36821.3353.629726.25323.9293.629729.42827.1044.233632.21529.5054.233635.39132.685.08538.02434.7715.08541.19937.9465.6454 1/244.01240.3985.6454 1/247.18743.5736.35453.08649.026.35459.43655.377.2573 1/265.20560.5587.2573 1/271.55666.9097.8163 1/477.54872.5447.8163 1/483.89978.8948.467389.83284.418.467396.18290.768.8352 7/8102.29796.6398.8352 7/8108.647102.999.2372 3/4114.74108.6259.2372 3/4121.09115.1769.6772 5/8127.159120.9639.6772 5/8133.509127.31310.162 1/2139.549133.04310.162 1/2145.9139.394牙型高H10.270.3380.4060.5070.6770.6770.8130.9041.0171.1621.3551.4791.6271.8072.0332.3242.3242.7112.7113.2533.2533.6143.6144.0664.0664.6474.6475.0055.0055.4225.4225.6575.6575.9155.9156.1966.1966.5066.506底孔直径mm1.151.92.53.23.74.55.16.57.99.210.413.416.2519.252224.527.2530.2533.535.538.541.2544.5505661.56873.758085.59298104.2110116.5122.5128.5134.5141英制普通螺纹 -- 细牙 -- BSF英制普通螺纹 (惠氏螺纹) -- 细牙 (BSW)每英寸牙大径螺距数中径小径mmmmtpimm外螺纹d=Dpd2=D2d34.7630.794324.2553.7475.5560.907284.9754.3946.350.977265.7255.17.1420.977266.5185.8937.9381.156227.1996.4599.5251.27208.7127.89911.1131.4111810.2099.30412.71.5881611.68410.66814.2881.5881613.27212.25615.8751.8141414.71213.54917.4631.8141416.315.13719.052.1171217.69316.33620.6382.1171219.28117.92422.2252.3091120.74719.26925.42.541023.77422.14828.5752.822926.76924.96331.752.822929.94428.13834.9253.175832.89330.86138.13.175836.06834.03641.2753.175839.24337.21144.453.629742.12639.80250.83.629748.47646.15257.154.234654.4451.7363.54.234660.7958.0869.854.234667.1464.4376.25.08572.94669.69282.555.08579.29676.04288.95.6454 1/285.28581.6795.255.6454 1/291.63588.02101.65.6454 1/297.98594.37107.956.354103.88699.822名义尺寸BSF3/167/321/49/325/163/87/161/29/165/811/163/413/167/81.001 1/81 1/41 3/81 1/21 5/81 3/422 1/42 1/22 3/433 1/43 1/23 3/444 1/4牙型代号BSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSFBSF牙型高H10.5080.5810.6250.6250.7390.8130.9041.0171.0171.1621.1621.3551.3551.4791.6271.8071.8072.0332.0332.0332.3242.3242.7112.7112.7113.2533.2533.6143.6143.6144.066底孔直径mm44.65.36.16.88.39.711.112.71415.516.7518.2519.7522.7526.528.7531.534.53840.5475359-------螺纹代号G 1/8G 1/4G 3/8G 1/2G 5/8G 3/4G 7/8G 1G 1 1/8G 1 1/4G 1 3/8G 1 1/2G 1 3/4G 2G 2 1/4G 2 1/2G 2 3/4G 3G 3 1/4G 3 1/2G 3 3/4G 4G 4 1/2G 5G 5 1/2G 6基本尺寸1/8＂1/4＂3/8＂1/2＂5/8＂3/4＂7/8＂1＂1 1/8＂1 1/4＂1 3/8＂1 1/2＂1 3/4＂2＂2 1/4＂2 1/2＂2 3/4＂3＂3 1/4＂3 1/2＂3 3/4＂4＂4 1/2＂5＂5 1/2＂6＂55°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)每英寸牙大径螺距数中径小径牙型高度底孔尺寸mmmmtpimm外螺纹H1mmd=Dpd2=D2d39.7280.907289.1478.5660.5818.713.1571.3371912.30111.4450.85611.616.6621.3371915.80614.950.8561520.9551.8141419.79318.6311.1621922.9111.8141421.74920.5871.16220.7526.4411.8141425.27924.1171.16224.530.2011.8141429.03927.8771.1622833.2492.3091131.7730.2911.47930.537.8972.3091136.41834.9391.4793541.912.3091140.43138.9521.47939.544.3232.3091142.84441.3651.47941.547.8032.3091146.32444.8451.4794553.7462.3091152.26750.7881.4795159.6142.3091158.13556.6561.4795765.712.3091164.23162.7521.4796375.1842.3091173.70572.2261.47972.581.5342.3091180.05578.5761.4797987.8842.3091186.40584.9261.47985.593.982.3091192.50191.0221.47991100.332.3091198.35197.3721.47997.75106.682.30911105.201103.7221.479104113.032.30911111.55110.0721.479110.5125.732.30911124.251122.7721.479123138.432.30911136.951135.4721.479136151.132.30911149.651148.1721.479148.5163.832.30911162.351160.8721.479161.5