... Steel, Stainless steel, Aluminium, Brass Coating: Plain, zinc plated, galvanized, nickel plated. BlackWe can supply you with full kinds of fasteners ... hex nuts, hex flange nuts, wing nuts, weld nuts, square nuts, cap nuts.Washers: flat washers, spring washers, lock ... washers, structural Washers. square washer, bowl washer.Screws: machine screws, self tapping screws, ...