管螺纹尺寸表
55°圆锥管螺纹（BSPT)
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英 寸mm mm tpi mm 外螺纹H1r d=D p d2=D2d3R 1/161/16"7.7230.907287.142 6.5610.5810.125R 1/81/8"9.7280.907289.1478.5660.5810.125R 1/41/4"13.157 1.3371912.30111.4450.8560.184R 3/83/8"16.662 1.3371915.80614.950.8560.184R 1/21/2"20.955 1.8141419.79318.631 1.1620.249R 3/43/4"26.441 1.8141425.27924.117 1.1620.249R 11"
33.249 2.3091131.7730.291 1.4790.317R 1 1/41 1/4"41.91 2.3091140.43138.952 1.4790.317R 1 1/21 1/2"47.803 2.3091146.32444.845 1.4790.317R 22"
59.614 2.3091158.13556.656 1.4790.317R 2 1/22 1/2"75.184 2.3091173.70572.226 1.4790.317R 33"87.884 2.3091186.40584.926 1.4790.317R 44"113.03 2.30911111.551110.072 1.4790.317R 55"138.43 2.30911136.951135.472 1.4790.317R 6
6"
163.83
2.309
11
162.351
160.872
1.479
0.317
螺纹代号
底孔尺
寸
mm 6.4 8.4 11.2 14.75 18.25 23.75
30 38.5 44.5
56
71 85.5 110.5 136 161.5