1、英制普通螺紋 (惠氏螺紋) - 小螺紋系列 (BA)名義尺寸 牙型代號大徑mmd=D螺距mmp每英寸牙 數 tpimmd2=D2小徑外螺紋d3牙型高 底孔直徑 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圓錐管螺紋型式和尺寸(2006-03- 13 14:38:47 )螺紋代號基本尺寸 大徑mmd=D螺距mmp每英寸牙 數 tpimmd2=D2小徑外螺紋d3牙型高度 圓弧尺寸 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制惠氏螺紋的型式尺寸英制普通螺紋 (惠氏螺紋) - 粗牙 (BSW)名義尺寸 Ww牙型代號大徑mmd=D螺距mmp每英寸牙 數 t

5、pimmd2=D2小徑外螺紋d3牙型高 底孔直徑 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英制普通螺紋 (惠氏螺紋) - 細牙 (BSW)名義尺寸 BSF牙型代號大徑mmd=D螺距mmp每英寸牙 數 tpimmd2=D2小徑外螺紋d3牙型高 底孔直徑

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圓柱管螺紋的型式和尺寸British Pipe Thread (惠氏管螺紋) - 圓柱 (BSPP/BSPF)螺紋代號基本尺寸大徑mmd=D螺距mmp每英寸牙 數 tpimmd2=D2小徑外螺紋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英寸錐管螺紋，每英寸11牙，螺距=25.4/ 11即2.309 ，牙高 (

17、深) =2.3090.64即1.479，錐度是固定的即1： R等于1/32乘以長度1/32意思是，錐螺紋的錐度是1：16 ，單邊就是1：32長度意思是：定位點加有效長度比如我定位3.0，有效長度是12.0R=1/32 X (3+12) =0.468751 、密封管螺紋 (R)英制密封管螺紋的基本尺寸及其公差配合方式英制密封管螺紋有兩種配合方式：圓柱內螺紋與圓錐外螺紋組成“柱/錐”配合； 圓錐內螺紋與圓錐外螺紋組成“錐/錐”配合.歐洲國家主要采用“柱/錐”配合螺紋；而歐洲以外國家則主要采用“柱/錐”配合螺紋.兩種螺紋的檢驗量規存在一定不同； 目前的ISO 英制密封管螺紋量規標準 (ISO 7-2

18、 ：2000) 是按“柱/錐”配合體系設計的. HYPERLINK /view/2021676.htm 編輯本段密封管螺紋的標記英制密封管螺紋的完整標記由螺紋特征代號、螺紋尺寸代號和旋向代號組成.英制密封圓柱內螺紋的特征代號為：RP；英制密封圓錐內螺紋的特征代號為：RC；英制密封圓錐外螺紋的特征代號為：R1 (與英制密封圓柱內螺紋配合使用) ；R2 (與英制密封圓錐內螺紋配合使用) ；左旋螺紋的旋向代號為LH；右旋螺紋的旋向代號省略不標.對密封管螺紋，利用RP/R1 ，RC/R2分別表示“柱/錐” 和“錐/錐”螺紋副.2 、非密封管螺紋英制非密封管的基本尺寸及其極限偏差標記:英制非密封管螺紋的完整標記由螺紋特征代號，螺紋尺寸代號， 中徑公差等級代號和旋向代號組成.英制非密封圓柱螺紋的特征代號為：G對英制非密封圓柱內螺紋，其中徑公差等級代號省略不標；而英制非密封圓柱外螺紋的中徑公尺等級代號分別為A和B. 左旋螺紋的旋向代號為LH；右旋螺紋的旋向代號省略不標.當表示英制非密封管螺紋的螺紋副時，僅標注外螺紋的標記代號.示例：尺寸代號為2的右旋，非密封圓柱內螺紋：G2尺寸代號為3的A級，右旋，非密封圓柱外螺紋：G3