d
Threads per inch
1/4
20
7/8
9
1.3/4
8
5/16
18
1.IN.
1.7/8
3/8
16
1.1/8
2.IN.
1/2
13
1.1/4
5/8
11
1.3/8
3/4
10
1.1/2
Thread
Material
Class
Packaging
Code
Page
UNC
St ASTM A193
Gr.B7
1 meter
Standard
22180
4-34
8 UN
22190