6 Metal hardware, namely, metal nuts, washers, thimbles, metal clamps, metal fasteners, bolts, nails, rivets, screws, white metal pins, cotter pins, metal sealing rings, metal gasket rings, metal key rings, metal seals and related C-Class components, namely, self-tapping bushings of metal, plugs, fittings of metal for use in industrial machinery, metal clips for general use; metal welding rods