7415: Copper nails, screws, bolts, pins, washers, etc

741510: Copper nails, tacks, drawing pins, staples etc 741521: Copper washers, including spring washers 741529: Copper cotters/cotter pins/unthreaded hardware nes 741531: Wood screws of copper and copper alloys 741532: Copper screws, bolts or nuts except wood screws 741539: Copper screw hooks and similar articles 7415: Copper nails, screws, bolts, pins, washers, etc