Sometimes you might remove a bolt or lug nut and find that the threads are stripped or have build-up. Rethreading might fix this. You can rethread bolts with a small bit rethreader or a tap and die. This article explains how to fix a stripped lug nut with a bit rethreader and how to clean bolt threads.
How to Clean Dirty Bolt Threads and Repair a Stripped Lug Nut
Steps for Fixing a Stripped Lug Nut and Cleaning Bolt Threads
- Brake Parts Cleaner
- Drain Pan
- Bolt Rethreader
- Eye Protection
You will only need some brake parts cleaner, a pan to catch any build-up and excess spray from the parts cleaner, eye protection goggles for safety, a pair of plastic gloves, and the right-sized bolt rethreader.
Mechanic’s Tip: Spray in an outward direction that’s away from your face. If you spray the lug nut directly in front of you, it can spray back in your direction.
How to Fix Stripped Lug Nut Threads
- Clean the Lug Nut with Brake Cleaner
Spray the lug nut bolt with brake cleaner to remove any build-up
- Find the Correct Size for the Threader
Tighten the threader into a lug nut by hand to find the right size. Compare it to the lug nut stud or try threading it on a lug nut in good condition.
- Clean the Lug Nut with Brake Cleaner and a Threader
Spray the bolt with brake cleaner and clean it with the threader
- Clean the Lug Nut with Brake Parts Cleaner
Spray the bolt with brake parts cleaner to remove any remaining build-up or metal shavings
- Check the Lug Nut with the Rethreader
Confirm the rethreader fits snug without binding or twisting too stiffly once the bolt is clean
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