FASTENERS, CONNECTORS AND ATTACHING DEVICES OF VARIOUS TYPES USED IN THE HOUSEHOLD, CONSTRUCTION AND INDUSTRIAL ARTS FOR MOUNTING AND CONNECTING VARIOUS PARTS WHETHER OF FABRIC, WOOD, METAL OR FIBER-BOARD-NAMELY, SEPARABLE SNAP FASTENERS AND COMPONENT PARTS THEREOF, SCREW THREAD FASTENERS AND COMPONENT PARTS THEREOF, ROTARY STUD FASTENERS, RIVETS, GROMMETS, METALLIC WASHERS, RETAINING FASTENERS FOR CONSTRUCTION PANELS, PLUG BUTTONS; AND RETAINING FASTENERS FOR TUBING, STAMPED METAL KEYHOLDERS AND METAL MOLDINGS