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 6620-01-303-2563
NSN 5965-01-278-2107
NSN 5915-00-518-0851
NSN 6105-00-909-8189
NSN 5996-01-297-1564
NSN 5996-01-604-0918
NSN 6240-00-822-4571
NSN 5935-01-044-4024
NSN 2925-00-308-0797
NSN 6685-01-440-8749
NSN 2925-01-384-4139
NSN 5965-00-983-1815