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 6105-01-593-2982
NSN 6135-01-461-2915
NSN 2925-00-896-7318
NSN 6620-01-462-0001
NSN 5998-01-186-5905
NSN 6240-00-740-8901
NSN 6105-01-389-8580
NSN 5935-01-296-6773
NSN 5915-00-206-0086
NSN 7035-01-068-4175
NSN 6145-00-959-5897
NSN 7035-01-377-7712