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 6105-00-252-3233
NSN 6240-01-597-4870
NSN 7035-01-299-7935
NSN 4140-01-045-1753
NSN 5835-00-341-5441
NSN 6110-01-384-0570
NSN 5965-01-374-2376
NSN 5945-00-415-2020
NSN 5915-01-421-4352
NSN 5915-01-136-3471
NSN 5935-00-296-8999
NSN 2925-01-047-9189