... ,BSW,ISO 2.Material:carbon steel,stainless steel,brass 3.Surface treatment:Plain,ZP,YZP,Black,HDG,Nickel,Dacromet,Nylok MaterialCarbon Steel ... , slotted nuts, rivet nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine screws, self tapping screws, set screws, hex socket head cap ...