Cudaboone,

Unfortunately, no, I don't have a clue. I happened to have these two clips/screws/nuts stashed away for my son's A-body projects.

The only place I can suggest that you check with is Au-ve-co Products (Auto-Vehicle Parts Co. in Cold Spring, KY). I have one of their small "Body Hardware & Specialty Fastener" flip charts. It's full of common screws, nuts, retainers, and clips of all sorts.

Good luck,
Jerry