My house has old-fashioned shutters, with a bar that comes over to
hold them closed. The bar is affixed by a single screw, but the hole
is starting to deteriorate. I replaced the screw, but it doesn't bite
well and keeps coming out.

Is there something I can put in the hole to refresh it? Ideally, I'd
like something that meant I could still get the screw in and out
although I guess this is not essential.

Thanks,

Peter