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 5930-01-647-1638
NSN 5935-00-399-1228
NSN 5945-01-461-7666
NSN 5915-01-511-1024
NSN 5925-01-567-0044
NSN 2925-00-284-1534
NSN 6150-00-996-2450
NSN 5935-00-778-8835
NSN 5915-00-876-6799
NSN 5835-01-426-6573
NSN 5920-01-026-7727
NSN 6650-01-582-6728