... 8 ,6.8,8.8,9.8....... WASHER,STAINLESS STEEL WASHER,FLAT WASHER. A good non-standard fastenerS manufacturer for your ... the specification of our Products ? MaterialsCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum are available.Carton steel is high quality iron,such as 1022 ... ,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typesPhillip type,Pozi ...