US Bolt Head/Wrench Size
Bolt Diameter | Head and Wrench Size | |
---|---|---|
Hex Bolt - Lag Bolt - Square Bolt |
Heavy Hex Bolt | |
#6 | 1/4" | - |
#8 | 1/4" | - |
#10 | 5/16" | - |
#12 | 5/16" | - |
1/4" | 7/16" or 3/8" | - |
5/16" | 1/2" | - |
3/8" | 9/16" | - |
7/16" | 5/8" | - |
1/2" | 3/4" | 7/8" |
9/16" | 13/16" | - |
5/8" | 15/16" | 1-1/16" |
3/4" | 1-1/8" | 1-1/4" |
7/8" | 1-5/16" | 1-7/16" |
1" | 1-1/2" | 1-5/8" |
1-1/8" | 1-11/16" | 1-3/4" |
1-1/4" | 1-7/8" | 2" |