Standard Steel Blind rivets have a steel rivet and mandrel, available in a standard diameter domed head.
Replacement Flange Head Bolt
Rivet Nut Installation Tool, 1/4″-20
Lightweight Dzus Weldment with S Spring, 1 1/2″ x 1 1/2″
Steel Pop Rivet, Large Flange, 3/16″ (.1875″)