... 2-6.4mm. 2.Length: 6-30mm. 3.Head type: round. 4.Material:aluminum/ steel BLIND RIVETS 1. Materials: Aluminum (5050)/ steel ... head,4. Diameter: 3.2mm, 4.0mm, 4.8mm, 6.4mm, (1/8, 5/32, 3/16, 1/4 ... / carton, without pallets,3. 1000 or 500 pcs/ box, 6 boxes/ carton, with palletsAdvantage: Riveting solid, simple operation, large ... lower price good quality color aluminum blind rivet 5050 aluminum blind flange