d x m
Threads per inch
s
7/16x16
20
16
1/2x18
19
9/16x19
18
22
5/8x18
24
5/8x19
25
3/4x19
28
3/4x21
7/8x23
14
33,3
1.IN.-14Gx25,2
38,1
1.IN.-14Gx33
Thread
Driving features
Material
Class
Packaging
Code
Page
UNF
hexagon
Free-cutting steel
high
Standard
06060
3-39
St
12
thin
06070
square
06080