1、僅供個人參考For personal use only in study and research;not for commercial use英制螺紋標準對照表英制普通螺紋（惠氏螺紋）-小螺紋系列（BA）名義尺寸牙型代號大徑螺距每英寸牙 數中徑小徑牙型高底孔直徑BAmm d=DmmPtpimm d2=D2外螺紋d3H1mmNo. 14BA 10.23110.40.860.720.140.75No. 13BA1.20.25101.61.050.90.150.95No. 12BA :1.30.2890.711.130.960.171 1No. 11BA1.50.3181.931.3151.130

2、.1851.2No. 10BA1.70.3572.571.491.280.211.35No. 9BA1.90.3965.121.6651.430.2351.5No. 8BA 丁2.20.4359.071.941.680.26r 1.8 nNo. 7BA2.50.4852.922.211.920.292No. 6BA2.80.5347.922.482.160.322.3No. 5BA3.20.5943.052.8452.490.355r 2.6 No. 4BA3.60.6638.483.2052.810.3952.95No. 3BA4.10.7334.793.663.220.443.4No. 2

3、BA4.70.8131.354.2153.730.4853.9No. 1BA5.30.928.224.764.220.544.4No. 0BA6125.45.44.80.65螺紋代號基本尺寸英寸大徑mmd=D55。圓錐管螺紋型式和尺寸牙型高度H1圓弧尺 寸r底孔尺寸mm螺距mmP每英寸牙數tpi中徑mm d2=D2小徑外螺紋d3R 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 "13.1571.3371912.30

4、111.4450.8560.18411.2R 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 1 '26.4411.8141425.27924.1171.1620.24923.75R 11 ”33.2492.3091131.7730.2911.4790.31730R 1 1/41 1/4 1 '41.912.3091140.43138.9521.4790.31738.5R 1 1/21 1/2 1

5、 '47.8032.3091146.32444.8451.4790.31744.5R 22"59.6142.3091158.13556.6561.4790.31756R 2 1/22 1/2 1 '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"138.432.30911136.951135.4721.4790.317136

6、R 66"163.832.30911162.351160.8721.4790.317161.5螺紋代號基本尺寸英寸大徑mmd=D55。圓錐管螺紋型式和尺寸螺距mmP每英寸牙 數tpi中徑mm d2=D2小徑外螺紋d3牙型高度H1圓弧尺寸r底扎尺 寸mmR 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 "

7、;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

8、.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 '163.832.30911162.351160.8

9、721.4790.317161.5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mm p每英寸牙 數tpi中徑mm d2=D2小徑外螺紋d3牙型高H1底孔直徑mm1/16 'BSW1.5870.423601.3151.050.271.153/32 'BSW2.3810.529482.0411.7030.3381.91/8'BSW3.1750.635402.7682.3620.4062.55/32 'BSW3.9690.793323.4592.9520.5073.23/16 'BSW4.7621.0582

10、44.0843.4070.6773.77/32 'BSW5.5561.058244.8784.2010.6774.51/4'BSW6.351.27205.5374.7240.8135.15/16 'BSW7.9381.411187.0346.1310.9046.53/8'BSW9.5251.588168.5097.4921.0177.97/16 'BSW11.1131.814149.9518.7891.1629.21/2'BSW12.72.1171211.3459.991.35510.45/8'BSW15.8762.3091114.397

11、12.9181.47913.43/4"BSW19.0512.541017.42415.7981.62716.257/8"BSW22.2262.822I 920.41918.6111.80719.251"BSW25.43.175823.36821.3352.033221 1/8 "BSW28.5763.629726.25323.9292.32424.51 1/4 "BSW 31.7513.629729.428 :27.1042.32427.251 3/8 "BSW34.9264.233632.21529.5052.71130.251 1

12、/2 "BSW38.14.233635.39132.682.71133.51 5/8 "BSW41.2775.08538.024 ：34.7713.25335.51 3/4 “BSW44.4525.08541.199 j37.9463.25338.51 7/8 "BSW47.6275.6454 1/244.01240.3983.61441.252 ''BSW 150.8025.6454 1/247.18743.5733.61444.52 1/4 "BSW”57.1526.35453.086 j49.024.066502 1/2 "

13、;BSW63.5026.35459.43655.374.066562 3/4 "BSW69.8537.2573 1/265.20560.5584.64761.53 "BSW 176.2037.2573 1/271.556 166.9094.647683 1/4 "BSW82.5537.8163 1/477.54872.5445.00573.753 1/2 "BSW88.9037.8163 1/483.89978.8945.005803 3/4 "BSW 195.2548.467p 3 n89.832 :84.415.42285.54 "

14、;BSW101.6048.467396.18290.765.422924 1/4 "BSW107.9548.8352 7/8102.29796.6395.657984 1/2 "BSW114.3048.8352 7/8108.647102.995.657104.24 3/4 "BSW120.6659.2372 3/4114.74108.6255.9151105 “BSW127.0059.2372 3/4121.09115.1765.915116.55 1/4 "BSW 丁133.3559.677P 2 5/8 1127.159：120.9636.1961

15、22.55 1/2 "BSW139.7059.6772 5/8133.509127.3136.196128.55 3/4 "BSW146.05510.162 1/2139.549133.0436.506134.56 ''BSW152.40610.162 1/2145.9139.3946.506141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mm d=D螺距mmp每英寸牙數tpi中徑mm d2=D2小徑外螺紋d3牙型高H1底孔直徑mm1/16 "BSW1.5870.423601.3151.050.271.15

16、3/32 “1BSW2.3810.529482.0411.7030.3381.91/8 “BSW3.1750.635402.7682.3620.4062.55/32 "BSW3.9690.793323.4592.9520.5073.23/16 "BSW4.7621.058244.0843.4070.6773.77/32 “BSW5.5561.058244.8784.2010.6774.51/4 "BSW6.351.27205.5374.7240.8135.15/16 "BSW7.9381.411187.0346.1310.9046.53/8 “BSW9.

17、5251.588168.5097.4921.0177.97/16 "BSW11.1131.814149.9518.7891.1629.21/2 "BSW12.72.1171211.3459.991.35510.45/8 "BSW15.8762.3091114.39712.9181.47913.43/4 "BSW19.0512.541017.42415.7981.62716.257/8 "BSW22.2262.822920.41918.6111.80719.251"bsw :25.43.175823.36821.3352.0331221

18、 1/8 “BSW28.5763.629726.25323.9292.32424.51 1/4 “BSW31.7513.629729.42827.1042.32427.251 3/8 “BSW34.9264.233632.21529.5052.71130.251 1/2 “BSW38.14.233635.39132.682.71133.51 5/8 “BSW41.2775.08538.02434.7713.25335.51 3/4 “BSW44.4525.08541.19937.9463.25338.51 7/8 “BSW47.6275.6454 1/244.01240.3983.614 41

19、.252”BSW50.8025.6454 1/247.18743.5733.61444.52 1/4 ”BSW57.1526.35453.08649.024.066502 1/2 ”BSW63.5026.35459.43655.374.066562 3/4 ”BSW69.8537.2573 1/265.20560.5584.64761.53 "BSW76.2037.2573 1/271.55666.9094.647683 1/4 ”BSW82.5537.8163 1/477.54872.5445.00573.753 1/2 ”BSW88.9037.8163 1/483.89978.8

20、945.005803 3/4 ”BSW95.2548.467389.83284.415.42285.54 "BSW101.6048.467396.18290.765.422924 1/4 ”BSW107.9548.8352 7/8102.29796.6395.657984 1/2 ”BSW114.3048.8352 7/8108.647102.995.657104.24 3/4 ”BSW 120.6659.2372 3/4114.74108.6255.915:1105 ”BSW127.0059.2372 3/4121.09115.1765.915116.55 1/4 ”BSW133.

21、3559.6772 5/8127.159120.9636.196122.55 1/2 ”BSW :139.7059.6772 5/8133.509127.3136.196:128.55 3/4 ”BSW146.05510.162 1/2139.549133.0436.506134.56”BSW152.40610.162 1/2145.9139.3946.50614155。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mm p每英寸牙數tpi中徑mm d2=D2小徑外螺紋d3牙型高度H1底孔尺寸mmG 1

22、/81/8 ”9.7280.907289.1478.5660.5818.7G 1/41/4 ”13.1571.3371912.30111.4450.85611.6G 3/83/8 ”16.6621.3371915.80614.950.85615G 1/21/2 ”20.9551.8141419.79318.6311.16219G 5/85/8 ”22.9111.8141421.74920.5871.16220.75G 3/43/4 ”26.4411.8141425.27924.1171.16224.5G 7/87/8 ”30.2011.8141429.03927.8771.16228G 11”

23、33.2492.3091131.7730.2911.47930.5不得用于商業用途G 1 1/81 1/8 "37.8972.3091136.41834.9391.47935G 1 1/41 1/4 "41.912.3091140.43138.9521.47939.5G 1 3/81 3/8 "44.3232.3091142.84441.3651.47941.5G 1 1/21 1/2 "47.8032.3091146.32444.8451.47945G 1 3/41 3/4 "53.7462.3091152.26750.7881.47951G 259.6142.3091158.13556.6561.47957G 2 1/42 1/4 “65.712.3091164.23162.7521.47963G 2 1/22 1/2 “75.1842.3091173.70572.2261.47972.5G 2 3/42 3/4 "81.5342.3091180.05578.5761.47979G 33 "87.8842.3091186.40584.9261