- Joined
- Feb 1, 2015
- Messages
- 10,131
Last week, I tore down some old machinery down where all the fasteners had square head bolts and square nuts. I use either a 7/16" (.437") or 11mm (.433") 12 pt. socket in reverse for my 3/8" drive. For a 1/2" drive, a 15mm (.570") 12 point socket works.