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 6645-01-596-6077
NSN 6110-01-614-0318
NSN 5965-01-366-0598
NSN 6620-01-352-5640
NSN 7035-00-270-5519
NSN 6130-00-299-6920
NSN 5985-01-481-4234
NSN 6620-01-658-1082
NSN 5920-01-323-6739
NSN 6220-00-903-6647
NSN 5895-01-024-8409
NSN 5920-01-356-0431