A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 6110-01-480-3842
NSN 5965-01-197-6924
NSN 5925-00-736-0425
NSN 5895-01-170-3357
NSN 5960-01-069-8028
NSN 5945-01-059-7074
NSN 6145-01-488-7822
NSN 6130-01-033-7731
NSN 5835-01-426-6573
NSN 6320-00-405-2348
NSN 5835-01-245-8077
NSN 6650-01-571-1764