Angle irons of metal; Brackets of metal for furniture; Hardware, namely, metal brackets for general use; Joists of metal; Metal beam clamps; Metal hinges; Metal mounting brackets for general use; Metal shelf brackets; Small items of metal hardware, namely, nuts, springs and washers; Fence posts of metal; Fireplace mantels of metal; Joists of iron or steel; Metal fasteners, namely, bolts, nails, rivets and screws