Originally Posted by apltrez
Are these pop rivets Aluminum shank and adequate for interior, belly pan etc uses where Buck Rivets aren't required?
It will say on the package what kind of mandrel. I have seen both kinds in the big box stores. Avoid steel mandrels--they rust and
are terrible to remove (not because of the rust, because it's really hard to drill into the center of the rivet).
If you find some holes that have been damaged and are too big to hold a 1/8" rivet securely, use a 3/32" in its place.
You need 3/16" rivets for the belly pan. Even better, get the big head versions from Vintage Trailer Supply.