各种螺纹规格参数一览表

名义尺寸大径螺距每英寸牙数中径小径牙型高底孔直径Ww

mm mm tpi mm 外螺纹H1mm

d=D p d2=D2d31/16"

BSW 1.5870.42360 1.315 1.050.27 1.153/32"

BSW 2.3810.52948 2.041 1.7030.338 1.91/8"

BSW 3.1750.63540 2.768 2.3620.406 2.55/32"

BSW 3.9690.79332 3.459 2.9520.507 3.23/16"

BSW 4.762 1.05824 4.084 3.4070.677 3.77/32"

BSW 5.556 1.05824 4.878 4.2010.677 4.51/4"

BSW 6.35 1.2720 5.537 4.7240.813 5.15/16"

BSW 7.938 1.411187.034 6.1310.904 6.53/8"

BSW 9.525 1.588168.5097.492 1.0177.97/16"

BSW 11.113 1.814149.9518.789 1.1629.21/2"

BSW 12.7 2.1171211.3459.99 1.35510.45/8"

BSW 15.876 2.3091114.39712.918 1.47913.43/4"

BSW 19.051 2.541017.42415.798 1.62716.257/8"

BSW 22.226 2.822920.41918.611 1.80719.251"

BSW 25.4 3.175823.36821.335 2.033221 1/8"

BSW 28.576 3.629726.25323.929 2.32424.51 1/4"

BSW 31.751 3.629729.42827.104 2.32427.251 3/8"

BSW 34.926 4.233632.21529.505 2.71130.251 1/2"

BSW 38.1 4.233635.39132.68 2.71133.51 5/8"

BSW 41.277 5.08538.02434.771 3.25335.51 3/4"

BSW 44.452 5.08541.19937.946 3.25338.51 7/8"

BSW 47.627 5.645 4 1/244.01240.398 3.61441.252"

BSW 50.802 5.645 4 1/247.18743.573 3.61444.52 1/4"

BSW 57.152 6.35453.08649.02 4.066502 1/2"

BSW 63.502 6.35459.43655.37 4.066562 3/4"BSW 69.8537.257 3 1/265.20560.558 4.64761.5牙型代号

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)