0.768
3/4
0.642
5/8
0.515
1/2
0.452
7/16
0.388
3/8
0.324
5/16
0.750
0.260
1/4
Min.
Max.
Basic
Min.
Max.
Min.
Max.
Basic
Max.
Height
Width Across Corners
Width Across Flats
Lt (ref)
H
G
F
Nominal Size or Basic
Bolt Diameter