Those rivets have a convex bottom shape, and you insert them and use a punch to pop that convex bottom down, which expands the sides and holds the rivet in place. Really pretty simple. They don't have a ton of holding power, but are adequate for things like dataplates.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.