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 4140-01-627-3334
NSN 5950-01-167-7042
NSN 6240-01-058-5061
NSN 6240-01-222-8253
NSN 5998-00-923-3369
NSN 6145-00-103-1954
NSN 5935-00-965-9228
NSN 6320-01-147-9177
NSN 5960-00-434-3193
NSN 5990-01-282-0570
NSN 6610-00-288-5655
NSN 6240-01-464-4571