Builders' hardware of common metals, namely, metal bearings, metal pulleys, metal framing for fly screens, metal connectors for hollow extrusions; small hardware of metal, namely, nuts, bolts and screws of metal, metal hinges, threaded inserts of metal; hardware of metal for doors, namely, metal door rollers, metal hinges, metal door guides, metal door closers, metal knockers; locks of metal; metal mechanical combination locks; metal mechanical dialing locks; metal mechanical safety locks; me...