最新英制螺纹对照表

1、英制普通螺纹 (惠氏螺纹) - 小螺纹系列 (BA)名义尺寸 牙型代号大径mmd=D螺距mmp每英寸牙 数 tpimmd2=D2小径外螺纹d3牙型高 底孔直径 mmNo 1410 230 860 720 140 75No. 130.255No. 120.2890.710.961No 1 10 3181 931 3150 185No. 100.3572.570.21No. 90.391.6650.235No 82 20 4359 070 26No. 72.50.4852.922.210.292No. 62.80.5347.922.480.322.3No 53 20 5943 052 8452 4

2、90 3552 6No. 43.60.6638.483.2052.810.3952.95No. 34.10.7334.793.663.220.443.4No 24 70 8131 354 2153 730 4853 9No. 15.30.928.224.764.220.544.4No 06125 45 44 80 6555o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mmd=D螺距mmp每英寸牙 数 tpimmd2=D2小径外螺纹d3牙型高度 圆弧尺寸 r底孔尺寸 mmR 1/ 161/ 167 7230 907287 1426 5610 5810

3、1256 4R 1/81/89.7280.907288.5660.5818.4R 1/41/41.33712.3010.856R 3/83/816 6621 33715 80614 950 8560 18414 75R 1/21/220.9551.81419.79318.6310.24918.25R 3/43/426.4411.81425.2790.24923.75R 133 2492 30931 7730 2911 4790 31730R 1 1/41 1/441.912.30940.43138.9521.4790.31738.5R 1 1/21 1/247.8032.30946.32444

4、.8451.4790.31744.5R259 6142 30958 13556 6561 4790 31756R 2 1/22 1/22.30973.70572.2261.4790.31771R 387.8842.30986.40584.9261.4790.31785.5R442 3091 4790 317R 5138.432.309136.951135.4721.4790.317R 6163.832.309162.351160.8721.4790.317161.5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 Ww牙型代号大径mmd=D螺距mmp每英寸牙 数 t

5、pimmd2=D2小径外螺纹d3牙型高 底孔直径 mmBSW1.5870.423601.3150.273/32BSW2.3810.529482.0411.7030.3381/8BSW0.635402.7682.3620.4062.55/32BSW3.9690.793323.4592.9520.5073.2BSW4.7621.058244.0843.4070.6773.77/32BSW5.5561.058244.8784.2010.6774.51/4BSW6.35205.5374.7240.8135.1BSW7.9381.4117.0340.9046.53/8BSW9.5251.5888.509

6、7.4921.0177.9BSW1.8149.9518.7899.21/2BSW12.79.991.3555/8BSW15.8762.30914.39712.9181.4793/4BSW19.0512.5417.42415.7981.62716.257/8BSW22.2262.822920.41918.6111.80719.25BSW25.4823.36821.3352.033221 1/8BSW28.5763.629726.25323.9292.32424.51 1/4BSW31.7513.629729.4282.32427.251 3/8BSW34.9264.233632.21529.50

7、52.71130.251 1/2BSW4.233635.39132.682.71133.51 5/8BSW41.2775.08538.02434.7713.25335.51 3/4BSW44.4525.08537.9463.25338.51 7/8BSW47.6275.6454 1/244.01240.3983.61441.25BSW50.8025.6454 1/243.5733.61444.52 1/4BSW6.35453.08649.024.066502 1/2BSW63.5026.35459.43655.374.066562 3/4BSW69.8537.2573 1/265.20560.

8、5584.64761.5BSW76.2037.2573 1/271.55666.9094.647683 1/4BSW82.5537.8163 1/477.54872.5445.00573.753 1/2BSW88.9037.8163 1/483.89978.8945.005803 3/4BSW95.2548.467389.83284.415.42285.54BSW101.6048.467390.765.422924 1/4BSW107.9548.8352 7/8102.29796.6395.657984 1/2BSW8.8352 7/8108.647102.995.657104.24 3/4B

9、SW120.6659.2372 3/4108.6255.915BSW127.0059.2372 3/4121.095.9155 1/4BSW133.3559.6772 5/8120.963122.55 1/2BSW139.7059.6772 5/8133.509127.313128.55 3/4BSW146.0552 1/2139.549133.0436.506134.5BSW152.4062 1/2145.9139.3946.506英制普通螺纹 (惠氏螺纹) - 细牙 (BSW)名义尺寸 BSF牙型代号大径mmd=D螺距mmp每英寸牙 数 tpimmd2=D2小径外螺纹d3牙型高 底孔直径

10、mmBSF4.7630.794324.2553.7470.50847/32BSF5.5560.907284.9754.3940.5814.61/4BSF6.350.977265.7255.10.6255.39/32BSF0.977266.5185.8930.6256.1BSF7.938226.4590.7396.83/8BSF9.525208.7127.8990.8138.3BSF1.41110.2099.3040.9049.71/2BSF12.71.58810.6681.017BSF14.2881.58813.27212.2561.01712.75/8BSF15.8751.81414.712

11、13.549BSF17.4631.8146.35.53/4BSF19.0517.69316.3361.35516.75BSF20.63819.28117.9241.35518.257/8BSF22.2252.30920.74719.2691.47919.75BSF25.42.5423.7741.62722.751 1/8BSF28.5752.822926.76924.9631.80726.51 1/4BSF31.752.822929.9441.80728.751 3/8BSF34.925832.89330.8612.03331.51 1/2BSF836.06834.0362.03334.51

12、5/8BSF41.275839.24337.2112.033381 3/4BSF44.453.629739.8022.32440.52BSF50.83.629748.4762.324472 1/4BSF4.234654.4451.732.711532 1/2BSF63.54.234660.7958.082.711592 3/4BSF69.854.234664.432.711-3BSF76.25.08572.94669.6923.253-3 1/4BSF82.555.08579.29676.0423.253-3 1/2BSF88.95.6454 1/285.28581.673.614-3 3/4

13、BSF95.255.6454 1/291.63588.023.614-4BSF101.65.6454 1/297.98594.373.614-4 1/4BSF107.956.354103.88699.8224.066-55o圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) - 圆柱 (BSPP/BSPF)螺纹代号基本尺寸大径mmd=D螺距mmp每英寸牙 数 tpimmd2=D2小径外螺纹d3牙型高度 底孔尺寸 mmG 1/81/89.7280.907288.5660.5818.7G 1/41.33712.3010.856G 3/83/816.6621.33715.8

14、0614.950.856G 1/21/220.9551.81419.79318.631G 5/85/822.9111.81421.74920.58720.75G 3/43/426.4411.81425.27924.5G 7/87/830.2011.81429.03927.87728G 133.2492.30931.7730.2911.47930.5G 1 1/81 1/837.8972.30936.41834.9391.47935G 1 1/41 1/441.912.30940.43138.9521.47939.5G 1 3/81 3/844.3232.30942.84441.3651.479

15、41.5G 1 1/21 1/247.8032.30946.32444.8451.47945G 1 3/41 3/453.7462.30952.26750.7881.47951G 259.6142.30956.6561.47957G 2 1/42 1/465.712.30964.23162.7521.47963G 2 1/22 1/22.30973.70572.2261.47972.5G 2 3/42 3/481.5342.30980.05578.5761.47979G 387.8842.30986.40584.9261.47985.5G 3 1/43 1/493.982.30992.5019

16、1.0221.47991G 3 1/23 1/2100.332.30998.35197.3721.47997.75G 3 3/43 3/4106.682.309105.201103.7221.479G 442.3091.479G 4 1/24 1/2125.732.309124.251122.7721.479G 5138.432.309136.951135.4721.479G 5 1/25 1/22.309149.6511.479148.5G 6163.832.309162.351160.8721.479161.5RC2英寸锥管螺纹，每英寸11牙，螺距=25.4/ 11即2.309 ，牙高 (

17、深) =2.3090.64即1.479，锥度是固定的即1： R等于1/32乘以长度1/32意思是，锥螺纹的锥度是1：16 ，单边就是1：32长度意思是：定位点加有效长度比如我定位3.0，有效长度是12.0R=1/32 X (3+12) =0.468751 、密封管螺纹 (R)英制密封管螺纹的基本尺寸及其公差配合方式英制密封管螺纹有两种配合方式：圆柱内螺纹与圆锥外螺纹组成“柱/锥”配合； 圆锥内螺纹与圆锥外螺纹组成“锥/锥”配合.欧洲国家主要采用“柱/锥”配合螺纹；而欧洲以外国家则主要采用“柱/锥”配合螺纹.两种螺纹的检验量规存在一定不同； 目前的ISO 英制密封管螺纹量规标准 (ISO 7-2

18、 ：2000) 是按“柱/锥”配合体系设计的. HYPERLINK /view/2021676.htm 编辑本段密封管螺纹的标记英制密封管螺纹的完整标记由螺纹特征代号、螺纹尺寸代号和旋向代号组成.英制密封圆柱内螺纹的特征代号为：RP；英制密封圆锥内螺纹的特征代号为：RC；英制密封圆锥外螺纹的特征代号为：R1 (与英制密封圆柱内螺纹配合使用) ；R2 (与英制密封圆锥内螺纹配合使用) ；左旋螺纹的旋向代号为LH；右旋螺纹的旋向代号省略不标.对密封管螺纹，利用RP/R1 ，RC/R2分别表示“柱/锥” 和“锥/锥”螺纹副.2 、非密封管螺纹英制非密封管的基本尺寸及其极限偏差标记:英制非密封管螺纹的完整标记由螺纹特征代号，螺纹尺寸代号， 中径公差等级代号和旋向代号组成.英制非密封圆柱螺纹的特征代号为：G对英制非密封圆柱内螺纹，其中径公差等级代号省略不标；而英制非密封圆柱外螺纹的中径公尺等级代号分别为A和B. 左旋螺纹的旋向代号为LH；右旋螺纹的旋向代号省略不标.当表示英制非密封管螺纹的螺纹副时，仅标注外螺纹的标记代号.示例：尺寸代号为2的右旋，非密封圆柱内螺纹：G2尺寸代号为3的A级，右旋，非密封圆柱外螺纹：G3