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 5920-01-322-8928
NSN 6650-00-056-1581
NSN 5895-01-142-0839
NSN 5965-00-823-8623
NSN 5910-01-457-4800
NSN 6220-01-030-2697
NSN 5998-01-511-7277
NSN 6685-01-241-2325
NSN 6130-01-012-8290
NSN 5945-00-436-6264
NSN 6110-00-313-2434
NSN 4140-01-287-3903