A-body armrest - stripped threads in door’s sheet metal

mopar56 said
Rivnuts! So easy to use, you can use a tool like a rivet gun but even simpler is the one in the picture, just load the rivnut in the collet, hold with a wrench and tighten with a drill or impact gun or even just a wrench and allen key, SO simple I keep a kit with several sizes on hand you can get on Amazon or any faster store.

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Unfortunately, the armrest base does not use a machine screw, and, the hole is at an angle. Welding /attaching a nut won't work either as it will lay flat .

Cutting and spreading the metal and then rewelding the slot takes minutes and works.