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 6240-00-762-0795
NSN 6240-00-143-3175
NSN 5990-01-305-8121
NSN 5910-01-263-3951
NSN 6610-01-367-1640
NSN 5895-01-604-9047
NSN 6105-00-949-0012
NSN 5835-01-251-4945
NSN 5990-01-331-9438
NSN 5935-00-891-4956
NSN 6110-01-557-4740
NSN 6130-01-069-4632