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 6130-00-181-4422
NSN 5920-01-048-6907
NSN 5965-00-689-1545
NSN 7035-01-203-8010
NSN 6110-01-398-2602
NSN 6130-01-452-1955
NSN 6320-01-166-3602
NSN 5895-00-558-9032
NSN 6150-01-475-3100
NSN 6620-01-595-7459
NSN 5915-00-565-0324
NSN 4140-01-521-8021