螺纹规格
编号
公称直径
每英寸牙数
螺纹系列代号
1
1/2
14
NPT Male
2
1/4
18
NPT Female
3
Male STOCK on TDG Series
4
Male w/ snubber
5
1/8
27
6
7
7/16
20
UNF Male SAE #4(J1926-2) Straight
8
UNF Male SAE #4(J514) Cone
9
9/16
UNF Male SAE #6(J1926-2)