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 5999-01-263-7665
NSN 2925-01-325-3974
NSN 6240-00-705-7731
NSN 5855-01-249-0717
NSN 5990-01-595-9441
NSN 5960-01-045-8524
NSN 6145-01-158-2125
NSN 6145-00-193-9466
NSN 5910-00-249-4172
NSN 5999-00-782-8933
NSN 5910-01-645-4728
NSN 5930-01-323-7161