First, a story about how I made this discovery. Many years ago I was running new equipment when someone noticed a bold had backed almost all way out. Snugged the bolt and discovered it was mostly stripped and would not torque. On hand was some string trimner line. Cut a piece the depth of the hole and reinstalled the bolt. This was not an extremely high stress area so I ran the equipment keeping an eye on that bolt. Later it was still secure. Located near the engine block my guess was the heat would soften the trimmer line (I have no idea what that stuff is made out of) and the bolt may loosen. After several hours over a period of 4 or 5 days I stopped worrying. Years later the mackima was worn out and junked with that bolt still holding. I've seen locking nuts with some type of plastic so my guess is that's the same principal.
Once I drilled the motrer between bricks and cut string trimmer line then drove a nail into the brick wall. I learned this trick over 30 years ago and have never shared it. I'm 72 now. May as well pass it on. Some bolt holes, I've put up to 3 pieces. They can't extend past the hole and should reach the bottom. Some bolts must be fixed right but I keep some line in my tool box. Never know when this trick will get you home. I'm full of tricks. Once built a fire using the muffler heat on my ATV. Good day
Once I drilled the motrer between bricks and cut string trimmer line then drove a nail into the brick wall. I learned this trick over 30 years ago and have never shared it. I'm 72 now. May as well pass it on. Some bolt holes, I've put up to 3 pieces. They can't extend past the hole and should reach the bottom. Some bolts must be fixed right but I keep some line in my tool box. Never know when this trick will get you home. I'm full of tricks. Once built a fire using the muffler heat on my ATV. Good day