Fastenere.com Large Flange Pop Rivets 3/16 x 1 Aluminum Body Steel Mandrel Large Dome Head 6-16 Gap .876

Open end blind rivets are tubular rivets with a mandrel through the center. The entire rivet assembly is inserted into a hole drilled through the parts to be joined, and a specially designed tool is used to draw the mandrel into the rivet. This expands the blind end of the rivet and snaps off the mandrel.