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 6105-01-610-5219
NSN 5905-01-124-9220
NSN 5910-01-469-5437
NSN 5945-00-342-2196
NSN 6240-01-423-1335
NSN 5998-01-575-5274
NSN 5935-01-455-8438
NSN 6110-00-112-1476
NSN 6135-01-421-4855
NSN 5835-01-050-7882
NSN 6650-00-229-3790
NSN 5990-01-191-1772