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 4140-01-452-2980
NSN 6130-00-088-3609
NSN 5905-00-606-0165
NSN 5935-01-541-5104
NSN 5985-01-389-7853
NSN 6145-00-426-8565
NSN 5996-00-518-3675
NSN 5930-01-312-6880
NSN 5925-00-904-5763
NSN 6610-00-867-6403
NSN 5835-00-446-2944
NSN 5996-01-083-7483