6 FASTENERS AND RETAINING FITTINGS-NAMELY, (1) BOLTS, NUTS, SCREWS, NAILS, TACKS, STUDS, RIVETS, COTTER PINS, CLIPS, HOOKS, EYES, STRAPS, CORRUGATED FASTENERS, AND WASHERS, (2) CLEVIS PINS AND KEYS, (3) CORNER BRACES, MENDING PLATES AND FLAT CORNER IRONS