The mystery of the lock nut, though, isn’t how it works. ... As you might deduce, the crimping tool has to be harder than the nut material, so that takes some extra effort.

A nut splitter is a handy tool that can get you out of a jam. Here's what it does, how it works, when you might need it, and other things you can try.

The mystery of the lock nut, though, isn’t how it works. The nylon insert is just a little too small for the bolt, and the bolt, being harder than nylon, ...

Another tool mechanics use constantly is a torque wrench. These devices let us tighten fasteners like nuts and bolts to a specified tightness or torque rating without exceeding that rating.