Manic172
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If your any good with a drill. I would drill out the thread and then use what's called a wire insert. You drill and tap the hole out to a bigger size. But then you wind in a "helicoil" thread. This then brings it back down to the size you want. They are used loads in aerospace for threads in aluminium. Because if they keep taking things apart the ally will wear out. So they use these helicoil as they are stainless or mild steel and won't wear out. And even if it did. You use a special tool to grip it and wind it out