I know I have seen them before but I cant think of the damn name. Its an insert that you can press into a piece of aluminum to act as a socket that will accept a ball end of a bolt. If that's confusing just think about the end of a bessey clamp. I want my piece of aluminum fixed so it doesn't rotate when I start tightening the bolt. Make sense?
so I want to turn the bolt and have the wedge move but not spin
so I want to turn the bolt and have the wedge move but not spin