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 5910-00-165-2886
NSN 5975-01-252-0960
NSN 5965-00-856-0552
NSN 6130-01-503-0208
NSN 6220-01-269-8391
NSN 5985-01-633-4158
NSN 5910-00-409-4384
NSN 5960-01-512-0233
NSN 5930-00-459-0794
NSN 5930-00-103-9083
NSN 5945-01-512-1533
NSN 5999-01-091-9898