Standard aluminum Blind rivets have an aluminum mandrel, available in a standard diameter domed head.
Lightweight Dzus Weldment with S Spring, 1 1/2″ x 1 1/2″
Closed End Blind Rivet, 3/16″ (.1875″ OD)
Aluminum Rivet Washers
Aluminum Pop Rivet, 5/32″ (.156″)