Utilize a triangular file to make a die out of any nut. A die is utilized to bring back the threads on a bolt. You need to cautiously screw it on to and back off of the ruined threads, using a couple of drops of oil to lubricate. Get rid of the metal shavings and your completed

File grooves to remove metal shavings

File grooves to remove metal shavings. You will need a good file Get it HERE.


  1. Maybe stainless steel would be good for strength. Or m8 locknuts which are pretty much hard tool steel.
  2. To harden it before use by heating to red hot and quenching
  3. especially good if you quench it in something like used motor oil which will add carbon
  4. Don’t forget that you will need GOOD sharp files.


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