djb2
Well-known member
Thoughtfully designed breaker bars have a few degree rotation (15 degrees?) on the drive square so that you have more positioning options. That significantly eliminates the advantage of 12 point sockets, although they are still faster to use.
I do believe that a precisely sized 12 point socket with 'flank drive' will have about the same contact points as an equivalently well designed 6 point socket.
The advantage a six point socket has it that the broaching can be a lot sloppier and still manage to turn the fastener, albeit with more risk of damage. Equivalently, the fastener can be a little undersized or rusted away.
I do believe that a precisely sized 12 point socket with 'flank drive' will have about the same contact points as an equivalently well designed 6 point socket.
The advantage a six point socket has it that the broaching can be a lot sloppier and still manage to turn the fastener, albeit with more risk of damage. Equivalently, the fastener can be a little undersized or rusted away.
