... Non Standard Bolts,Non Standard Hardware,USA Bolts And Nuts.1.What’s the specification of our Products ? MaterialsCarbon steel,Stainless steel,Alloy steel ... ,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head, ... than 20 years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and ... to produce fastener.Perfect quality 1.In Carbon Steel,The material are always use C1022 , ...