Standard Steel Blind rivets have a steel rivet and mandrel, available in a standard diameter domed head.
Steel Pop Rivet, 5/32″ (.156″)
Dzus Fastener, S Spring (1″ hole centers)
Lightweight Dzus Weldment with S Spring, 1 1/2″ x 1 1/2″
Closed End Blind Rivet, 5/32″ (.156″ OD)