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small metal hardware; namely, bolts, screws, nuts, flanged, toothed, serrated lock, tab, spring, stop, bevelled, dished, recessed, taper hub, flat, thrust, thickness, cup spring, safety, crimping, stepped, split, countersunk, spherical, ballsocket and seat, spacer and adjustment washers; rivets; cylindrical, alignment, calibrated, grooved, taper threaded taper, stop, centering and locating pins; assembly spindles; dowels; friction, biconical, support, stop, coupling, sealing, thrust, contact, retaining setting, connection, clamping, screw cap, crimping, expandable, sleeve, reducing sleeve, locking and spacer rings; positioning spacers and threaded and locking inserts