... ,6.8,8.8,9.8.......... ALUMINUM SLEEVE NUT,ALUMINUM WELD NUT,NUT A good non-standard ... ? MaterialsCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum are available.Carton steel is high quality iron, ... pure copper,such as H62,H65,H68...Aluminum is good Aluminum,R200...Meanwhile,we can use other materials ... years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so on .2. Our ...