... 3.Surface:Zinc,Galvanized 4.new HEX COUPLING NUTS DIN6334 Our biggest strength is non-standard product ... nuts, heavy hex nuts, hex flange nuts, nylon insert lock nuts, cap nuts, slotted nuts, rivet nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine screws, self ... tapping screws, set screws, hex socket head cap screws, wood screws, self drilling screwsChain and ...