... .8 ,6.8,8.8... Aluminum Fasteners,Blind Fasteners, Weld Fastener 1.What’s the specification of our Products ? MaterialCarbon steel ... head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typePhillip type,Pozi type ... special research person and more than 100 equipment to produce fastener.Perfect quality 1.We have strict quality control from producing ...