[WANTED] 1968 Barracuda Radiator mounting inserts

[Traxfish]

Where can I find the mounting inserts that fit in to the slots in the below photos? I'm swapping a radiator with a more OEM radiator that has a different bolt pattern. It looks like one of the mounting inserts is missing, though.

 

[Professor Fate]

Hardware store- look in the specialty drawers. They're called "cage nuts".

 

[69FBCuda]

Thats a Pierce Nut if I'm not mistaken. What size is it?

 

[Professor Fate]

Thats a Pierce Nut if I'm not mistaken. What size is it?

View attachment 1715866477

Looking closer at his picture, you may be correct- although I've seen both types used. Good eye!

 

[Traxfish]

Thats a Pierce Nut if I'm not mistaken. What size is it?

View attachment 1715866477

I don't know the size, but I ordered these mounting bolts and verified they fix in the existing pierce nuts.
1966-74 A B E-Body Black Phosphate Coated Radiator-Core ...

 

[69FBCuda]

What are the nut dimensions?