Aluminum Fasteners,Blind Fasten 1.ISO,ANSI,CE,DIN, ... .Grade:4.8 ,6.8,8.8... Aluminum Fasteners,Blind Fasteners, Weld Fastener 1.What’s the specification ... of our Products ? MaterialCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum ... pure copper,such as H62,H65,H68...Aluminum is good Aluminum.Meanwhile,we can use other materials accordingto ...