It is a plastic/nylon captive nut but I am having a hell of a time finding it as I am not even sure what the technical term for it is. Perused through McMaster without success.

Help me out, and if you have a link to a vendor - even better.

I will send you a link

looks like the little square nuts for older headlight adjusters. My old Subaru Legacy uses them for aiming. I've used square license plate nuts in place of them with good results when the old ones disintegrated and were a PITA to find

Originally posted by CODE4

I see what you did there. ;)

No you did not! :p Actually these are some photos that I jacked from other forums online and did my own arrows/clipart to show what I was after.

Not my own stuff...

I find it quite funny and ironic that Dave is the one asking a hardware question :7

yeah yeah :p

I do not claim to know everything :p

Hey Dave, that is a square nylon threaded insert (insert nut). McMaster should have them under the threaded insert section.

Edit: Here you go- http://www.mcmaster.com/#threaded-inserts (Click on Press-Fit)

You should be able to pick these up at your local parts house (common use is a license plate fastener).

Doug, thank you!