Nominal Size Screw Dimension (mm) 304
Inventory
B (inch) A (mm) d1 L Hezagon W Octagon W
1/4B 8A R1/4 19 14
3/8B 10A R3/8 22 17
1/2B 15A R1/2 24 22
3/4B 20A R3/4 27 27
1B 25A R1 30 34