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H1
r
mm
d=D p d2=D2d3R 1/161/16"7.7230.907287.142 6.5610.5810.125 6.4R 1/81/8"9.7280.907289.1478.5660.5810.1258.4R 1/41/4"13.157 1.3371912.30111.4450.8560.18411.2R 3/83/8"16.662 1.3371915.80614.950.8560.18414.75R 1/21/2"20.955 1.8141419.79318.631 1.1620.24918.25R 3/43/4"26.441 1.8141425.27924.117 1.1620.24923.75R 11"33.249 2.3091131.7730.291 1.4790.31730R 1 1/4 1 1/4"41.91 2.3091140.43138.952 1.4790.31738.5R 1 1/2 1 1/2"47.803 2.3091146.32444.845 1.4790.31744.5R 22"59.614 2.3091158.13556.656 1.4790.31756R 2 1/2 2 1/2"75.184 2.3091173.70572.226 1.4790.31771R 33"87.884 2.3091186.40584.926 1.4790.31785.5R 44"113.03 2.30911111.551110.072 1.4790.317110.5R 55"138.43 2.30911136.951135.472 1.4790.317136R 66"163.83
2.309
11162.351
160.872
1.4790.317161.5
螺纹代号
55°圆锥管螺纹(BSPT)
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大径
螺距每英寸牙数
中径小径牙型高度底孔尺寸mm mm tpi
mm 外螺纹H1
mm
d=D
p
d2=D2
d3
G 1/81/8"9.7280.907289.1478.5660.5818.7G 1/41/4"13.157 1.3371912.30111.4450.85611.6G 3/83/8"16.662 1.3371915.80614.950.85615G 1/21/2"20.955 1.8141419.79318.631 1.16219G 5/85/8"22.911 1.8141421.74920.587 1.16220.75G 3/43/4"26.441 1.8141425.27924.117 1.16224.5G 7/87/8"30.201 1.8141429.03927.877 1.16228G 11"33.249 2.3091131.7730.291 1.47930.5G 1 1/8 1 1/8"37.897 2.3091136.41834.939 1.47935G 1 1/4 1 1/4"41.91 2.3091140.43138.952 1.47939.5G 1 3/8 1 3/8"44.323 2.3091142.84441.365 1.47941.5G 1 1/2 1 1/2"47.803 2.3091146.32444.845 1.47945G 1 3/4 1 3/4"53.746 2.3091152.26750.788 1.47951G 22"59.614 2.3091158.13556.656 1.47957G 2 1/4 2 1/4"65.71 2.3091164.23162.752 1.47963G 2 1/2 2 1/2"75.184 2.3091173.70572.226 1.47972.5G 2 3/4 2 3/4"81.534 2.3091180.05578.576 1.47979G 33"87.884 2.3091186.40584.926 1.47985G 3 1/4 3 1/4"93.98 2.3091192.50191.022 1.47991G 3 1/2 3 1/2"100.33 2.3091198.35197.372 1.47997.75G 3 3/4 3 3/4"106.68 2.30911105.201103.722 1.479104G 44"113.03 2.30911111.55110.072 1.479110.5G 4 1/2 4 1/2"125.73 2.30911124.251122.772 1.479123G 55"138.43 2.30911136.951135.472 1.479136G 5 1/2 5 1/2"151.13 2.30911149.651148.172 1.479148.5G 6
6"
163.83
2.309
11
162.351
160.872
1.479
161.5
British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)螺纹代号
基本尺寸
55°圆柱管螺纹的型式和尺寸
管螺纹尺寸表