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 5835-01-116-2369
NSN 5915-01-078-8503
NSN 5915-01-645-1687
NSN 7035-01-421-7159
NSN 6105-00-893-3139
NSN 6320-01-291-4870
NSN 5998-01-600-4374
NSN 5999-00-819-0034
NSN 6620-01-206-5748
NSN 4140-00-360-2457
NSN 6220-01-517-7186
NSN 5895-00-311-8969