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 5935-00-088-0233
NSN 6135-01-238-2878
NSN 5835-01-009-1059
NSN 5985-00-406-6311
NSN 6320-01-583-6809
NSN 5965-01-035-6842
NSN 6220-01-145-1183
NSN 4140-00-138-4139
NSN 6610-00-001-2517
NSN 5925-01-592-3077
NSN 5965-01-039-8557
NSN 6130-00-197-9371