METAL BRACKETS FOR SUPPORTING AND HANGING INDUSTRIAL AND DOMESTIC OBJECTS, METAL CASTERS, METAL MOLDING, METAL EXTRUSIONS, NAMELY, SHAPES MADE BY FORCING THROUGH A DIE, FOR USE IN STRUCTURAL SUPPORT SYSTEMS, AND METAL FASTENERS FOR ATTACHING OBJECTS TOGETHER, NAMELY, SCREWS, NUTS, BOLTS, RIVETS, WASHERS, NAILS, CLAMPS, CLIPS, TACKS, HOOKS, CONNECTORS, PLUGS, AND LATCHES