Standard Steel Blind rivets have a steel rivet and mandrel, available in a standard diameter domed head.
Steel Pop Rivet, Large Flange, 3/16″ (.1875″)
Aluminum Pop Rivet, Large Flange, 3/16″ (.1875″)
Steel Pop Rivet, 5/32″ (.156″)
Aluminum Pop Rivet, 5/32″ (.156″)