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 4140-00-833-6239
NSN 6240-00-183-0750
NSN 6650-01-333-7918
NSN 6110-01-337-5665
NSN 4140-00-313-2358
NSN 5999-01-461-7968
NSN 5935-00-618-6596
NSN 6610-00-927-7415
NSN 6110-01-222-0767
NSN 6620-00-941-0537
NSN 5920-01-010-3293
NSN 5965-01-068-6696