Typically, we’ll throw a simple helical spring lock washer on a stud or bolt, torque down the nut nice and snug, and call it a day, feeling like we’ve made a secure joint. But nothing could ...

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, taps a very close-fitting hole in the ...

“I can remove a locking lug nut without the special key in about one minute,” says Pyle. “All you need is a $20 bolt extractor kit, a large ratchet and a socket set.” To use this ...