The tire jockey damaged my wheel stud by cross threading it with his air impact. The first two threads were crushed. You can't easily rethread it because the die won't start properly and I did not want to replace the stud. I bought a cheap chinese hex die and split it so I could place the two halves on the stud next to the wheel engaging the undamaged threads. By using a close fitting 6-point socket I was able to repair the threads by backing the die off the stud. The socket held the die together and the repaired thread area was completely renewed. Did not even have to remove the wheel.
