Originally posted by Fumblin46:
Check this out
A = Mounting Bolt
B = Armrest
C = 'sleeve nut' thing-a-ma-bob Sounds like you are describing a Nutsert. To install them, you need a tool that looks similar to a pop rivet tool. DAGS on nutsert and it will bring up a lot of pages. They come in thin sheet and thickwall versions. Thin sheet will work fine for the doors. Plus they are easier to install.