Spinner nut?

Whatever it's called, where can I find one?

 

Well I looked for about 30 minutes trying to figure it for you with no luck. Not sure what its called. I'd call it a quarter window hinge nut

You may call AMD they offer the quarter window latches in their catalog. You could probably call them and at the very least find out what thing is called so you know what your looking for. Here is a link to their catalog. The quarter window latches are on page 17 (very bottom).

http://musclecar-parts.com/MoparCatalogs/AMD-B-Body.pdf

Try giving Wildcat Auto Wrecking a call. They are a pre 80's mopar salvage yard located in Sandy, Oregon. They are a legit business I've been up there before. They will ship to you. I bet you they have more than a few of those laying around. I'm sure they would be more than happy to let you send them those pictures so they know what your talking about and ship one to you. They are a little high priced when it comes to bigger parts, but seriously how high can you price a nut? lol They have hundreds of cars up there. So I'm sure they will help you out.

Here is there number (503) 668-7786 and here is there website
http://www.wildcatmopars.com/

 

I would bet you have to buy the complete latch assembly