英制普通螺纹规格表
55°圆锥管螺纹型式和尺寸
（2006-03-13 14:38:47 ）
螺纹代号基本尺寸大径螺距
每英寸牙
数
中径小径牙型高度圆弧尺寸底孔尺寸英寸mm mm tpi mm外螺纹H1r mm d=D p d2=D2d3
R 1/161/16＂7.7230.907287.142 6.5610.5810.125 6.4 R 1/81/8＂9.7280.907289.1478.5660.5810.1258.4 R 1/41/4＂13.157 1.3371912.30111.4450.8560.18411.2 R 3/83/8＂16.662 1.3371915.80614.950.8560.18414.75 R 1/21/2＂20.955 1.8141419.79318.631 1.1620.24918.25 R 3/43/4＂26.441 1.8141425.27924.117 1.1620.24923.75 R 11＂33.249 2.3091131.7730.291 1.4790.31730
R 1 1/4 1 1/4＂41.91 2.3091140.43138.952 1.4790.31738.5 R 1 1/2 1 1/2＂47.803 2.3091146.32444.845 1.4790.31744.5
R 22＂59.614 2.3091158.13556.656 1.4790.31756
R 2 1/2 2 1/2＂75.184 2.3091173.70572.226 1.4790.31771
R 33＂87.884 2.3091186.40584.926 1.4790.31785.5 R 44＂113.03 2.30911111.551110.072 1.4790.317110.5 R 55＂138.43 2.30911136.951135.472 1.4790.317136 R 66＂163.83 2.30911162.351160.872 1.4790.317161.5
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
牙型代号大径螺距
每英寸牙
数
中径小径牙型高底孔直径
Ww mm mm tpi mm外螺纹H1mm
d=D p d2=D2d3
1/16＂BSW 1.5870.42360 1.315 1.050.27 1.15 3/32＂BSW 2.3810.52948 2.041 1.7030.338 1.9 1/8＂BSW 3.1750.63540 2.768 2.3620.406 2.5 5/32＂BSW 3.9690.79332 3.459 2.9520.507 3.2 3/16＂BSW 4.762 1.05824 4.084 3.4070.677 3.7 7/32＂BSW 5.556 1.05824 4.878 4.2010.677 4.5 1/4＂BSW 6.35 1.2720 5.537 4.7240.813 5.1 5/16＂BSW7.938 1.411187.034 6.1310.904 6.5 3/8＂BSW9.525 1.588168.5097.492 1.0177.9 7/16＂BSW11.113 1.814149.9518.789 1.1629.2 1/2＂BSW12.7 2.1171211.3459.99 1.35510.4 5/8＂BSW15.876 2.3091114.39712.918 1.47913.4 3/4＂BSW19.051 2.541017.42415.798 1.62716.25 7/8＂BSW22.226 2.822920.41918.611 1.80719.25 1＂BSW25.4 3.175823.36821.335 2.03322
1 1/8＂BSW28.576 3.629726.25323.929 2.32424.5 1 1/4＂BSW31.751 3.629729.42827.104 2.32427.25 1 3/8＂BSW34.926 4.233632.21529.505 2.71130.25 1 1/2＂BSW38.1 4.233635.39132.68 2.71133.5 1 5/8＂BSW41.277 5.08538.02434.771 3.25335.5 1 3/4＂BSW44.45
2 5.08541.19937.946 3.25338.5 1 7/8＂BSW47.627 5.645 4 1/244.01240.398 3.61441.25 2＂BSW50.802 5.645 4 1/247.18743.57
3 3.61444.5 2 1/4＂BSW57.152 6.35453.08649.02 4.06650
2 1/2＂BSW63.502 6.35459.43655.37 4.06656
2 3/4＂BSW69.8537.257
3 1/265.20560.558 4.64761.5 3＂BSW76.2037.257 3 1/271.55666.909 4.64768
3 1/4＂BSW82.5537.816 3 1/477.54872.54
4 5.00573.7
5 3 1/2＂BSW88.9037.81
6 3 1/483.89978.894 5.00580
3 3/4＂BSW95.2548.467389.83284.41 5.42285.5 4＂BSW101.6048.467396.18290.76 5.42292
4 1/4＂BSW107.9548.83
5 2 7/8102.29796.639 5.65798
4 1/2＂BSW114.3048.83
5 2 7/8108.647102.99 5.657104.2 4 3/4＂BSW120.6659.237 2 3/4114.74108.625 5.915110 5＂BSW127.0059.237 2 3/4121.09115.17
6 5.915116.5 5 1/4＂BSW133.3559.67
7 2 5/8127.159120.963 6.196122.5 5 1/2＂BSW139.7059.677 2 5/8133.509127.313 6.196128.5 5 3/4＂BSW146.05510.16 2 1/2139.549133.043 6.506134.5 6＂BSW152.40610.16 2 1/2145.9139.394 6.506141英制普通螺纹-- 细牙-- BSF
英制普通螺纹(惠氏螺纹) -- 细牙(BSW)
名义尺寸
牙型代号大径螺距
每英寸牙
数
中径小径牙型高底孔直径
BSF mm mm tpi mm外螺纹H1mm
d=D p d2=D2d3
3/16BSF 4.7630.79432 4.255 3.7470.5084
7/32BSF 5.5560.90728 4.975 4.3940.581 4.6 1/4BSF 6.350.97726 5.725 5.10.625 5.3 9/32BSF7.1420.97726 6.518 5.8930.625 6.1 5/16BSF7.938 1.156227.199 6.4590.739 6.8 3/8BSF9.525 1.27208.7127.8990.8138.3 7/16BSF11.113 1.4111810.2099.3040.9049.7 1/2BSF12.7 1.5881611.68410.668 1.01711.1 9/16BSF14.288 1.5881613.27212.256 1.01712.7 5/8BSF15.875 1.8141414.71213.549 1.16214 11/16BSF17.463 1.8141416.315.137 1.16215.5 3/4BSF19.05 2.1171217.69316.336 1.35516.75 13/16BSF20.638 2.1171219.28117.924 1.35518.25 7/8BSF22.225 2.3091120.74719.269 1.47919.75 1.00 BSF25.4 2.541023.77422.148 1.62722.75 1 1/8BSF28.575 2.822926.76924.963 1.80726.5 1 1/4BSF31.75 2.822929.94428.138 1.80728.75 1 3/8BSF34.925 3.175832.89330.861 2.03331.5 1 1/2BSF38.1 3.175836.06834.036 2.03334.5 1 5/8BSF41.275 3.175839.24337.211 2.03338
