6 Metal cables and metallic wires of common metal, non-electric; metal hardware, namely, metallic bolts, screws, washers, nuts, bars, pins, stems; metallic tubes and metal goods, namely, studs, hinges, spring hinges, articulated joints being structural joint connectors of metal, latches and locks, pipes, accessories in the nature of structural components for pipes, bushes in the nature of isolating bushing of metal, sleeves for affixing screws, shafts, plugs, rings in the nature of ring shaped fittings of metal; fastening and fixing elements made of metal, namely, connection plugs, collars for fastening eyewear components, threaded collars for fastening eyewear components, rivets, threaded rods for affixing screws, metal studs, chains