[zeroaxe]

Ah yes! Now I remember.... Steve C is referring to a tool that we used at my old work. Technically I wouldnt call it a nut that is riveted into the door, but rather something like an insert. Technicalities aside, those things work REALLY well! Just make sure that you got a SHARP drill bit THE SAME SIZE than the dia. of the insert, otherwise it wouldnt snugly fit once riveted, and give you endless frustration trying to bolt things down(the insert/nut will just spin in it's hole).

I wouldnt mind having one of those tools in my toolbox collection!