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英制普通螺纹 (惠氏螺纹) --小螺纹系列 (BA)

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名义尺寸大径螺距每英寸牙数中径小径牙型高BAmmmmtpimm外螺纹H1　d=Dp　d2=D2d3　No. 14BA10.23110.40.860.720.14No. 13BA1.20.25101.61.050.90.15No. 12BA1.30.2890.711.130.960.17No. 11BA1.50.3181.931.3151.130.185No. 10BA1.70.3572.571.491.280.21No. 9BA1.90.3965.121.6651.430.235No. 8BA2.20.4359.071.941.680.26No. 7BA2.50.4852.922.211.920.29No. 6BA2.80.5347.922.482.160.32No. 5BA3.20.5943.052.8452.490.355No. 4BA3.60.6638.483.2052.810.395No. 3BA4.10.7334.793.663.220.44No. 2BA4.70.8131.354.2153.730.485No. 1BA5.30.928.224.764.220.54No. 0BA6125.45.44.80.6 基本尺寸大径螺距每英寸牙数中径小径牙型高度英 寸mmmmtpimm外螺纹H1　d=Dp　d2=D2d3　R 1/161/16＂7.7230.907287.1426.5610.581R 1/81/8＂9.7280.907289.1478.5660.581R 1/41/4＂13.1571.3371912.30111.4450.856R 3/83/8＂16.6621.3371915.80614.950.856R 1/21/2＂20.9551.8141419.79318.6311.162R 3/43/4＂26.4411.8141425.27924.1171.162R 11＂33.2492.3091131.7730.2911.479R 1 1/41 1/4＂41.912.3091140.43138.9521.479R 1 1/21 1/2＂47.8032.3091146.32444.8451.479R 22＂59.6142.3091158.13556.6561.479R 2 1/22 1/2＂75.1842.3091173.70572.2261.479R 33＂87.8842.3091186.40584.9261.479R 44＂113.032.30911111.551110.0721.479R 55＂138.432.30911136.951135.4721.479R 66＂163.832.30911162.351160.8721.479牙型代号

　英制普通螺纹 (惠氏螺纹) --小螺纹系列 (BA)

　55°圆锥管螺纹型式和尺寸（2006-03-13 14:38:47 ）螺纹代号 名义尺寸大径螺距每英寸牙数中径小径牙型高Wwmmmmtpimm外螺纹H1　d=Dp　d2=D2d3　1/16＂BSW1.5870.423601.3151.050.273/32＂BSW2.3810.529482.0411.7030.3381/8＂BSW3.1750.635402.7682.3620.4065/32＂BSW3.9690.793323.4592.9520.5073/16＂BSW4.7621.058244.0843.4070.6777/32＂BSW5.5561.058244.8784.2010.6771/4＂BSW6.351.27205.5374.7240.8135/16＂BSW7.9381.411187.0346.1310.9043/8＂BSW9.5251.588168.5097.4921.0177/16＂BSW11.1131.814149.9518.7891.1621/2＂BSW12.72.1171211.3459.991.3555/8＂BSW15.8762.3091114.39712.9181.4793/4＂BSW19.0512.541017.42415.7981.6277/8＂BSW22.2262.822920.41918.6111.8071＂BSW25.43.175823.36821.3352.0331 1/8＂BSW28.5763.629726.25323.9292.3241 1/4＂BSW31.7513.629729.42827.1042.3241 3/8＂BSW34.9264.233632.21529.5052.7111 1/2＂BSW38.14.233635.39132.682.7111 5/8＂BSW41.2775.08538.02434.7713.2531 3/4＂BSW44.4525.08541.19937.9463.2531 7/8＂BSW47.6275.6454 1/244.01240.3983.6142＂BSW50.8025.6454 1/247.18743.5733.6142 1/4＂BSW57.1526.35453.08649.024.0662 1/2＂BSW63.5026.35459.43655.374.0662 3/4＂BSW69.8537.2573 1/265.20560.5584.6473＂BSW76.2037.2573 1/271.55666.9094.6473 1/4＂BSW82.5537.8163 1/477.54872.5445.0053 1/2＂BSW88.9037.8163 1/483.89978.8945.0053 3/4＂BSW95.2548.467389.83284.415.4224＂BSW101.6048.467396.18290.765.4224 1/4＂BSW107.9548.8352 7/8102.29796.6395.6574 1/2＂BSW114.3048.8352 7/8108.647102.995.6574 3/4＂BSW120.6659.2372 3/4114.74108.6255.9155＂BSW127.0059.2372 3/4121.09115.1765.9155 1/4＂BSW133.3559.6772 5/8127.159120.9636.1965 1/2＂BSW139.7059.6772 5/8133.509127.3136.196牙型代号制惠氏螺纹的型式尺寸英制普通螺纹 (惠氏螺纹) --粗牙 (BSW)5 3/4＂BSW146.05510.162 1/2139.549133.0436.5066＂BSW152.40610.162 1/2145.9139.3946.506 名义尺寸大径螺距每英寸牙数中径小径牙型高BSFmmmmtpimm外螺纹H1　d=Dp　d2=D2d3　3月16日BSF4.7630.794324.2553.7470.5087/32BSF5.5560.907284.9754.3940.5811月4日BSF6.350.977265.7255.10.6259/32BSF7.1420.977266.5185.8930.6255月16日BSF7.9381.156227.1996.4590.7393月8日BSF9.5251.27208.7127.8990.8137月16日BSF11.1131.4111810.2099.3040.9041月2日BSF12.71.5881611.68410.6681.0179月16日BSF14.2881.5881613.27212.2561.0175月8日BSF15.8751.8141414.71213.5491.16211月16日BSF17.4631.8141416.315.1371.1623月4日BSF19.052.1171217.69316.3361.35513/16BSF20.6382.1171219.28117.9241.3557月8日BSF22.2252.3091120.74719.2691.4791BSF25.42.541023.77422.1481.6271 1/8BSF28.5752.822926.76924.9631.8071 1/4BSF31.752.822929.94428.1381.8071 3/8BSF34.9253.175832.89330.8612.0331 1/2BSF38.13.175836.06834.0362.0331 5/8BSF41.2753.175839.24337.2112.0331 3/4BSF44.453.629742.12639.8022.3242BSF50.83.629748.47646.1522.3242 1/4BSF57.154.234654.4451.732.7112 1/2BSF63.54.234660.7958.082.7112 3/4BSF69.854.234667.1464.432.7113BSF76.25.08572.94669.6923.2533 1/4BSF82.555.08579.29676.0423.2533 1/2BSF88.95.6454 1/285.28581.673.6143 3/4BSF95.255.6454 1/291.63588.023.6144BSF101.65.6454 1/297.98594.373.6144 1/4BSF107.956.354103.88699.8224.066 牙型代号　英制普通螺纹 -- 细牙 -- BSF　英制普通螺纹 (惠氏螺纹) --细牙 (BSW)

55°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) --圆柱 (BSPP/BSPF)大径螺距每英寸牙数中径小径牙型高度mmmmtpimm外螺纹H1d=Dp　d2=D2d3　G 1/81/8＂9.7280.907289.1478.5660.581G 1/41/4＂13.1571.3371912.30111.4450.856G 3/83/8＂16.6621.3371915.80614.950.856G 1/21/2＂20.9551.8141419.79318.6311.162G 5/85/8＂22.9111.8141421.74920.5871.162G 3/43/4＂26.4411.8141425.27924.1171.162G 7/87/8＂30.2011.8141429.03927.8771.162G 11＂33.2492.3091131.7730.2911.479G 1 1/81 1/8＂37.8972.3091136.41834.9391.479G 1 1/41 1/4＂41.912.3091140.43138.9521.479G 1 3/81 3/8＂44.3232.3091142.84441.3651.479G 1 1/21 1/2＂47.8032.3091146.32444.8451.479G 1 3/41 3/4＂53.7462.3091152.26750.7881.479G 22＂59.6142.3091158.13556.6561.479G 2 1/42 1/4＂65.712.3091164.23162.7521.479G 2 1/22 1/2＂75.1842.3091173.70572.2261.479G 2 3/42 3/4＂81.5342.3091180.05578.5761.479G 33＂87.8842.3091186.40584.9261.479G 3 1/43 1/4＂93.982.3091192.50191.0221.479G 3 1/23 1/2＂100.332.3091198.35197.3721.479G 3 3/43 3/4＂106.682.30911105.201103.7221.479G 44＂113.032.30911111.55110.0721.479G 4 1/24 1/2＂125.732.30911124.251122.7721.479G 55＂138.432.30911136.951135.4721.479G 5 1/25 1/2＂151.132.30911149.651148.1721.479G 66＂163.832.30911162.351160.8721.479螺纹代号基本尺寸

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(完整word版)英制惠氏螺纹的型式尺寸

(完整word版)英制惠氏螺纹的型式尺寸

英制惠氏螺纹的型式尺寸

英制普通螺纹 -- 粗牙 -- BSW

英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)

名义尺寸

Ww 牙型代号 大径

mm

d=D 螺距

mm

p 每英寸牙数

tpi 中径

mm

d2=D2 小径

外螺纹

d3 牙型高

H1 底孔直径

mm

1/16" BSW 1.587 0.423 60 1.315 1.050 0.270 1.15

3/32" BSW 2.381 0.529 48 2.041 1.703 0.338 1.90

1/8" BSW 3.175 0.635 40 2.768 2.362 0.406 2.50

5/32" BSW 3.969 0.793 32 3.459 2.952 0.507 3.20

3/16" BSW 4.762 1.058 24 4.084 3.407 0.677 3.70

7/32" BSW 5.556 1.058 24 4.878 4.201 0.677 4.50

1/4" BSW 6.350 1.270 20 5.537 4.724 0.813 5.10

5/16" BSW 7.938 1.411 18 7.034 6.131 0.904 6.50

3/8" BSW 9.525 1.588 16 8.509 7.492 1.017 7.90

7/16" BSW 11.113 1.814 14 9.951 8.789 1.162 9.20

1/2" BSW 12.700 2.117 12 11.345 9.990 1.355 10.40

5/8" BSW 15.876 2.309 11 14.397 12.918 1.479 13.40

3/4" BSW 19.051 2.540 10 17.424 15.798 1.627 16.25

7/8" BSW 22.226 2.822 9 20.419 18.611 1.807 19.25

美标和英制螺纹区别

美标和英制螺纹区别

英、美制紧固件螺纹

英、美制紧固件螺纹

英寸制螺纹包括惠氏螺纹（Whitworth thread）和统一标准螺纹（Unified thread）。

惠氏螺纹是英国英寸制规格紧固件用普通螺纹，其牙型角为55°，习惯用公称直径（单位为英寸inch）及每英寸牙数来表示，尺寸单位采用符号“””。例如：1/2”-12BSW表示公称直径为1/2”的粗牙惠氏螺纹。

统一标准螺纹是美国英寸制规格紧固件用普通螺纹，其牙型角为60°，一般用号码（公称直径﹤1/4”）或公称直径的英寸分数（≥1/4”）、每英寸牙数和代号（UNC、UNF）来表示。例如：1/2”-13UNC表示公称直径为1/2”的粗牙统一标准螺纹。

惠氏螺纹和统一标准螺纹公称直径与每英寸牙数

螺纹大径 统一标准螺纹ANSI B1.1-182 惠氏螺纹BS84-1956

inch 尺寸代号 粗牙UNC 细牙UNF 尺寸代号 粗牙BSW 细牙BSF

0.0600 0# 80

0.0625 1/16 60

0.0730 1# 64 72

0.0860 2# 56 64

0.0938 3/32 48

0.0990 3# 48 56

0.1120 4# 40 48

0.1250 5# 40 44 1/8 40

0.1380 6# 32 40

0.1563 5/32 32

0.1640 8# 32 36

0.1875 3/16 24 32

0.1900 10# 24 32

0.2160 12# 24 28

0.2189 7/32 24 28

0.2500 1/4 20 28 1/4 20 26

0.2812 9/32 26

0.3125 5/16 18 24 5/16 18 22

英制-惠氏螺纹规格

英制-惠氏螺纹规格

英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)

名义尺寸

Ww 牙型

代号 大径

mm

d=D 螺距

mm

p 每英寸牙数

tpi 中径

mm

d2=D2 小径

外螺纹

d3 牙型高

H1 底孔

直径

mm

1/16＂ BSW 1.587 0.423 60 1.315 1.050 0.270 1.15

3/32＂ BSW 2.381 0.529 48 2.041 1.703 0.338 1.90

1/8＂ BSW 3.175 0.635 40 2.768 2.362 0.406 2.50

5/32＂ BSW 3.969 0.793 32 3.459 2.952 0.507 3.20

3/16＂ BSW 4.762 1.058 24 4.084 3.407 0.677 3.70

7/32＂ BSW 5.556 1.058 24 4.878 4.201 0.677 4.50

1/4＂ BSW 6.350 1.270 20 5.537 4.724 0.813 5.10

5/16＂ BSW 7.938 1.411 18 7.034 6.131 0.904 6.50

3/8＂ BSW 9.525 1.588 16 8.509 7.492 1.017 7.90

7/16＂ BSW 11.113 1.814 14 9.951 8.789 1.162 9.20

1/2＂ BSW 12.700 2.117 12 11.345 9.990 1.355 10.40

5/8＂ BSW 15.876 2.309 11 14.397 12.918 1.479 13.40

3/4＂ BSW 19.051 2.540 10 17.424 15.798 1.627 16.25

7/8＂ BSW 22.226 2.822 9 20.419 18.611 1.807 19.25

1＂ BSW 25.400 3.175 8 23.368 21.335 2.033 22.00

英制螺纹对照表-螺纹小知识

英制螺纹对照表-螺纹小知识

一、英制螺纹

英制螺纹是螺纹尺寸用英制标注，按外形分圆柱、圆锥两种；按牙型角分55°、60°两种。螺纹中的1/4、1/2、1/8 标记是指螺纹尺寸的直径，单位是英寸。一寸等于8分，1/4 寸就是2分，如此类推。

一、国外常用英制螺纹的代号名称和标准号

标记代号 名 称 国别及标准号 备注

B.S.W. 标准惠氏粗牙系列，一般用途圆柱螺纹

英国标准

BS 84

牙型角为55°的英制螺纹 B.S.F. 标准惠氏细牙系列，一般用途圆柱螺纹

Whit.S 附加的惠氏可选择系列，一般用途圆柱螺纹

Whit 惠氏牙型的非标准螺纹

UN 恒定螺距系列的统一螺纹

美国标准

ANSI B1.1

牙型角为60°的英制螺纹，具有标准牙型（牙底是平的或随意倒圆的）的内、外螺纹 UNC 粗牙系列的统一螺纹

UNF 细牙系列的统一螺纹

UNEF 超细牙系列的统一螺纹

UNS① 特殊系列的统一螺纹

UNR 圆弧牙底恒定螺距系列的统一螺纹 牙型角为60°的英制螺纹，具有圆弧牙底的UNR、UNRC、UNRF、UNREF、UNRS 只用于外螺纹而没有内螺纹 UNRC 圆弧牙底粗牙系列统一螺纹

UNRF 圆弧牙底细牙系列统一螺纹

UNREF 圆弧牙底超细牙系列统一螺纹

UNRS 圆弧牙底特殊系列统一螺纹

NPT② 一般用于管螺纹

美国标准

ANSI B1.20.1

牙型角为60°的英制管螺纹 NPSC 管接头用直管螺纹

NPTR 导杆连接用锥管螺纹

NPSM 机械连接用直管螺纹

NPSL 锁紧螺母用直管螺纹

NPSH 软管连接用直管螺纹

NPTF 干密封标准型锥管螺纹

美国标准

ANSI B1.20.3 Ⅰ型

PTF-SAE SHORT 干密封短型锥管螺纹 Ⅱ型

NPSF 干密封标准型燃油用直管内螺纹 Ⅲ型

NPS1 干密封标准型一般用直管内螺纹 Ⅳ型

NPS1 干密封标准型一般用直管内螺纹 美国标准

ANSI B1.5 牙型角为29°的英制传动螺纹