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 6610-01-645-7515
NSN 6645-00-684-3424
NSN 5935-00-877-2739
NSN 4140-01-510-9666
NSN 7035-01-461-7742
NSN 5960-00-560-7147
NSN 5975-01-485-3490
NSN 6220-01-049-2847
NSN 5985-01-600-7725
NSN 5945-01-250-3888
NSN 5998-01-428-7824
NSN 7035-01-106-3476