1英制螺纹标准对照表英制螺纹标准对照表英制普通螺纹 (惠氏螺纹) -- 小螺纹系列 (BA)名义尺寸大径螺距每英寸牙 数中径小径牙型高底孔直径BAmmmmtpimm外螺纹H1mm牙型代号d=Dpd2=D2d3 No. 14BA10.23110.40.860.720.140.75 No. 13BA1.20.25101.61.050.90.150.95 No. 12BA1.30.2890.711.130.960.171 No. 11BA1.50.3181.931.3151.130.1851.2 No. 10BA1.70.3572.571.491.280.211.35 No. 9BA1.90.3965.121.6651.430.2351.5 No. 8BA2.20.4359.071.941.680.261.8 No. 7BA2.50.4852.922.211.920.292 No. 6BA2.80.5347.922.482.160.322.3 No. 5BA3.20.5943.052.8452.490.3552.6 No. 4BA3.60.6638.483.2052.810.3952.95 No. 3BA4.10.7334.793.663.220.443.4 No. 2BA4.70.8131.354.2153.730.4853.9 No. 1BA5.30.928.224.764.220.544.4 No. 0BA6125.45.44.80.6555°圆锥管螺纹型式和尺寸基本尺寸大径螺距每英寸牙数中径小径牙型高度 圆弧尺寸 底孔尺寸英 寸mmmmtpimm外螺纹H1rmm螺纹代号d=Dpd2=D2d3R 1/161/16＂7.7230.907287.1426.5610.5810.1256.4R 1/81/8＂9.7280.907289.1478.5660.5810.1258.4R 1/41/4＂13.1571.3371912.30111.4450.8560.18411.2R 3/83/8＂16.6621.3371915.80614.950.8560.18414.75R 1/21/2＂20.9551.8141419.79318.6311.1620.24918.25R 3/43/4＂26.4411.8141425.27924.1171.1620.24923.75R 11＂33.2492.3091131.7730.2911.4790.31730R 1 1/41 1/4＂41.912.3091140.43138.9521.4790.31738.5R 1 1/21 1/2＂47.8032.3091146.32444.8451.4790.31744.5R 22＂59.6142.3091158.13556.6561.4790.31756R 2 1/22 1/2＂75.1842.3091173.70572.2261.4790.31771R 33＂87.8842.3091186.40584.9261.4790.31785.5R 44＂113.032.30911111.551110.0721.4790.317110.5R 55＂138.432.30911136.951135.4721.4790.317136R 66＂163.832.30911162.351160.8721.4790.317161.5255°圆锥管螺纹型式和尺寸基本尺寸大径螺距每英寸牙 数中径小径牙型高度 圆弧尺寸底孔尺 寸 英 寸mmmmtpimm外螺纹H1rmm螺纹代号d=Dpd2=D2d3 R 1/161/16＂7.7230.907287.1426.5610.5810.1256.4 R 1/81/8＂9.7280.907289.1478.5660.5810.1258.4 R 1/41/4＂13.1571.3371912.30111.4450.8560.18411.2 R 3/83/8＂16.6621.3371915.80614.950.8560.18414.75 R 1/21/2＂20.9551.8141419.79318.6311.1620.24918.25 R 3/43/4＂26.4411.8141425.27924.1171.1620.24923.75 R 11＂33.2492.3091131.7730.2911.4790.31730 R 1 1/41 1/4＂41.912.3091140.43138.9521.4790.31738.5 R 1 1/21 1/2＂47.8032.3091146.32444.8451.4790.31744.5 R 22＂59.6142.3091158.13556.6561.4790.31756 R 2 1/22 1/2＂75.1842.3091173.70572.2261.4790.31771 R 33＂87.8842.3091186.40584.9261.4790.31785.5 R 44＂113.032.30911111.551110.0721.4790.317110.5 R 55＂138.432.30911136.951135.4721.4790.317136 R 66＂163.832.30911162.351160.8721.4790.317161.5制惠氏螺纹的型式尺寸英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)名义尺寸大径螺距每英寸牙 数中径小径牙型高底孔直径Wwmmmmtpimm外螺纹H1mm牙型代号d=Dpd2=D2d3 1/16＂BSW1.5870.423601.3151.050.271.15 3/32＂BSW2.3810.529482.0411.7030.3381.9 1/8＂BSW3.1750.635402.7682.3620.4062.5 5/32＂BSW3.9690.793323.4592.9520.5073.2 3/16＂BSW4.7621.058244.0843.4070.6773.7 7/32＂BSW5.5561.058244.8784.2010.6774.5 1/4＂BSW6.351.27205.5374.7240.8135.1 5/16＂BSW7.9381.411187.0346.1310.9046.5 3/8＂BSW9.5251.588168.5097.4921.0177.9 7/16＂BSW11.1131.814149.9518.7891.1629.2 1/2＂BSW12.72.1171211.3459.991.35510.4 5/8＂BSW15.8762.3091114.39712.9181.47913.4 3/4＂BSW19.0512.541017.42415.7981.62716.25 7/8＂BSW22.2262.822920.41918.6111.80719.25 1＂BSW25.43.175823.36821.3352.03322 1 1/8＂BSW28.5763.629726.25323.9292.32424.531 1/4＂BSW31.7513.629729.42827.1042.32427.25 1 3/8＂BSW34.9264.233632.21529.5052.71130.25 1 1/2＂BSW38.14.233635.39132.682.71133.5 1 5/8＂BSW41.2775.08538.02434.7713.25335.5 1 3/4＂BSW44.4525.08541.19937.9463.25338.5 1 7/8＂BSW47.6275.6454 1/244.01240.3983.61441.25 2＂BSW50.8025.6454 1/247.18743.5733.61444.5 2 1/4＂BSW57.1526.35453.08649.024.06650 2 1/2＂BSW63.5026.35459.43655.374.06656 2 3/4＂BSW69.8537.2573 1/265.20560.5584.64761.5 3＂BSW76.2037.2573 1/271.55666.9094.64768 3 1/4＂BSW82.5537.8163 1/477.54872.5445.00573.75 3 1/2＂BSW88.9037.8163 1/483.89978.8945.00580 3 3/4＂BSW95.2548.467389.83284.415.42285.5 4＂BSW101.6048.467396.18290.765.42292 4 1/4＂BSW107.9548.8352 7/8102.29796.6395.65798 4 1/2＂BSW114.3048.8352 7/8108.647102.995.657104.2 4 3/4＂BSW120.6659.2372 3/4114.74108.6255.915110 5＂BSW127.0059.2372 3/4121.09115.1765.915116.5 5 1/4＂BSW133.3559.6772 5/8127.159120.9636.196122.5 5 1/2＂BSW139.7059.6772 5/8133.509127.3136.196128.5 5 3/4＂BSW146.05510.162 1/2139.549133.0436.506134.5 6＂BSW152.40610.162 1/2145.9139.3946.506141制惠氏螺纹的型式尺寸英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)名义尺寸大径螺距每英寸牙 数中径小径牙型高底孔直径Wwmmmmtpimm外螺纹H1mm牙型代号d=Dpd2=D2d31/16＂BSW1.5870.423601.3151.050.271.15 3/32＂BSW2.3810.529482.0411.7030.3381.9 1/8＂BSW3.1750.635402.7682.3620.4062.5 5/32＂BSW3.9690.793323.4592.9520.5073.2 3/16＂BSW4.7621.058244.0843.4070.6773.7 7/32＂BSW5.5561.058244.8784.2010.6774.5 1/4＂BSW6.351.27205.5374.7240.8135.1 5/16＂BSW7.9381.411187.0346.1310.9046.5 3/8＂BSW9.5251.588168.5097.4921.0177.9 7/16＂BSW11.1131.814149.9518.7891.1629.2 1/2＂BSW12.72.1171211.3459.991.35510.4 5/8＂BSW15.8762.3091114.39712.9181.47913.4 3/4＂BSW19.0512.541017.42415.7981.62716.2547/8＂BSW22.2262.822920.41918.6111.80719.25 1＂BSW25.43.175823.36821.3352.03322 1 1/8＂BSW28.5763.629726.25323.9292.32424.5 1 1/4＂BSW31.7513.629729.42827.1042.32427.25 1 3/8＂BSW34.9264.233632.21529.5052.71130.25 1 1/2＂BSW38.14.233635.39132.682.71133.5 1 5/8＂BSW41.2775.08538.02434.7713.25335.5 1 3/4＂BSW44.4525.08541.19937.9463.25338.5 1 7/8＂BSW47.6275.6454 1/244.01240.3983.61441.25 2＂BSW50.8025.6454 1/247.18743.5733.61444.5 2 1/4＂BSW57.1526.3。