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 5945-01-439-8576
NSN 4140-01-592-4036
NSN 6110-01-497-5827
NSN 5920-01-464-8480
NSN 5960-00-755-7017
NSN 5905-00-614-5643
NSN 5999-00-975-5360
NSN 4140-01-592-4036
NSN 6145-01-486-1913
NSN 2925-01-415-2140
NSN 6110-00-147-6006
NSN 5975-01-142-8420