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 5915-01-080-8394
NSN 5998-01-354-8463
NSN 5996-01-575-5349
NSN 5996-00-061-0336
NSN 5895-01-554-3709
NSN 5855-00-832-9341
NSN 5910-01-543-5540
NSN 6145-01-103-7275
NSN 5965-00-221-5789
NSN 5915-01-649-5064
NSN 5985-00-287-5067
NSN 5990-01-504-9265