You ever come across stripped bolt threads? A sure fire way to fix the threads is a Helicoils. Here I will show to proper steps to install Helicoils. You can purchase a Helicoil kit at your local auto parts store for just a little over $20. That sure beats replacing the part in a lot of cases.
Heli-coil Kits:
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Helicoil Repair Kit Metric: https://goo.gl/ZnmwGi
Helicoil 3/8-16 Inch Coarse Thread Repair Kit: https://goo.gl/91BFqY
Helicoil 1/4-20 Inch Coarse Thread Repair Kit: https://goo.gl/89mdH0 Helicoil Thread Repair Recoil Insert Kit M6 x 1.0 x 8.0mm
Helicoil M10 x 1.25 Metric Fine Thread Kit : https://amzn.to/2r1qJBq
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Note:Just so you’re aware, I do make a small percentage of any purchases made from the above links.