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 5930-01-221-1056
NSN 5960-00-389-2915
NSN 6620-00-882-6972
NSN 4140-01-631-4080
NSN 5930-01-425-8517
NSN 7035-00-064-7008
NSN 5985-00-478-4307
NSN 5935-01-587-4022
NSN 6685-00-876-8628
NSN 6150-00-260-6293
NSN 5996-01-468-3313
NSN 4140-00-038-4276