pop rivets, blind rivets aluminum rivet body, steel mandrel dome head / large flange strong, light weight,low cost fastening Blind rivet ... material: aluminum, 5005/5050 aluminum alloyZinc plated, polished, painting, color sprayedHead type: Domed, countersunk, peel, grooved, large flange etc.Usual diameter size available ... fasteners because of their speed and ease of application. aluminum pop rivet