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 4140-01-141-7692
NSN 5996-01-366-6183
NSN 6610-01-206-5278
NSN 6130-01-328-7536
NSN 7035-01-077-6041
NSN 5998-00-489-3340
NSN 5925-01-586-0232
NSN 6110-00-825-7558
NSN 4140-00-060-8693
NSN 5999-01-030-7826
NSN 5855-01-382-5169
NSN 5996-01-069-2915