d
Threads per inch
F
A
1/4
20
4
7/16
5/16
18
5,2
1/2
3/8
16
6
9/16
14
7,1
5/8
13
7,9
3/4
12
9,1
13/16
11
9,9
15/16
10
11,9
1.1/8
7/8
9
13,9
1.5/16
1.IN.
8
15,5
1.1/2
7
17,5
1.11/16
1.1/4
19,8
1.7/8
23,8
2.1/4
Thread
Driving features
Material
Class
Surface treatment
Packaging
Code
Page
UNC
hexagon
St
Grade 5
Standard
02410
1-47
Zipl
02430
1-48
St.St. A2
51016
St.St. A4
55016