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 6645-01-450-4849
NSN 6685-00-661-2347
NSN 6650-01-532-4725
NSN 6645-01-462-2101
NSN 6110-01-155-7004
NSN 6110-01-062-4291
NSN 5835-01-270-7899
NSN 6610-01-219-1656
NSN 4140-01-146-5409
NSN 5965-01-456-3936
NSN 5965-01-007-1963
NSN 5950-00-454-5548