... Stainless Steel Insert Nut ,Stainless Steel Barrel Nut ,Stainless Steel Blind Nut. 1.What’s the specification of our Products ? MaterialCarbon steel,Stainless steel,Alloy steel ... available.Head typeHexagon head,Mushroom head,Pan head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head... ... more than 20 years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench ...