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On my 66 coupe, one of the nuts that holds one of the passenger sun visor mounting screws is stripped. The screw swims around and has no purchase. When the visor is moved, it comes loose. The headliner has been completely installed. Any tips for repair? - thanks.
Some of the sellers of interior screw kits for Corvettes sell a version with oversize screws intended for stripped out fiberglass mounting holes. They still have the same size head. You can consider buying a kit and trying to adapt one to replace the screw with the stripped out hole/nut. Other wise a short piece of fine wire stuck in with the screw might take up enough clearance that the screw will tighten up.
Same thing happened to me and I used some JB Weld to fix it. Put JB in the hole using a toothpick or something similar and a dab on the threads of the bolt. Screw the bolt in. Let it set overnight. I bet you'll never have another problem with it. If you later want to remove the bolt, you'll be able to break the bond with a good twist of your screwdriver. I've used this Bubba fix with great results....and you have nothing to lose trying it since you can always retap and try to find an oversize screw if it doesn't work...but my bet is you won't!!
Why not put one of those small plastic anchors in the hole (similar to the ones people use in dry wall). Just get a thin soft plastic one and then when you turn the screw into it, it will expand slightly and retain the screw.
A few minutes with a screwdriver and you can remove the visors, mirror and trim piece. Then you can easily get to the bracket with the stripped hole. Removes the worry of messing up the interior trim while fixing the problem. I agree with the JB Weld fix. Mix it up, slop it in the stripped hole, let it sit for 24 hours, drill it, use the mounting screw to retap it, then put everything back together.
JB Weld will work as suggested (as long as you don't overtighten), or a piece of properly sized copper wire inserted into the hole (think solid electrical wire, not stranded) makes a quick and effective fix. Use such a sized wire so as not to occupy the entire hole, but to close the hole to effectively the same diameter as the root of the screw. It will force the screw to "bite into" it as well as the adjacent steel, works quite well and is quick to boot.
If you use the JB weld or another epoxie, put a thin coat of wax or another suitable release agent on the screw. Then you won't have to"gorilla" it out...