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 6110-01-502-4335
NSN 5930-00-839-3180
NSN 5985-00-761-3789
NSN 5996-01-136-4373
NSN 6620-00-959-6614
NSN 6685-00-947-0059
NSN 6685-01-368-1534
NSN 5990-01-529-6347
NSN 4140-00-824-6053
NSN 5990-00-901-2574
NSN 5835-01-426-6573
NSN 6620-00-962-1526