Aluminum Fastener,Non standard 1.ISO,ANSI,CE, ... 4.8 ,6.8,8.8.... Aluminum Fastener,Non standard Fasteners,Aluminum Fasteners.1.What’s the specification of ... Products ? MaterialCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum are available.Carton steel is high quality iron,such ... , pure copper,such as H62,H65,H68...Aluminum is good Aluminum.Meanwhile,we can use other materials accordingto customer ...