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 5965-01-271-9990
NSN 5998-01-168-4055
NSN 5950-01-416-2971
NSN 5950-00-808-5920
NSN 6610-00-410-8968
NSN 6150-01-008-4788
NSN 6645-00-443-8011
NSN 7035-01-182-1086
NSN 5999-01-393-0583
NSN 6110-01-336-0457
NSN 5945-01-323-6946
NSN 6135-00-497-0491