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 6240-01-395-9162
NSN 6130-00-340-9279
NSN 6220-01-050-8122
NSN 6145-01-461-2750
NSN 5998-01-477-4913
NSN 5985-01-021-9578
NSN 5930-00-139-3327
NSN 6105-00-836-6009
NSN 5985-00-446-6132
NSN 6645-00-518-2068
NSN 5910-01-227-8903
NSN 5985-01-124-2679