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 6240-01-459-9778
NSN 6610-01-070-9411
NSN 6145-01-023-1526
NSN 5905-00-120-0862
NSN 6220-01-559-3594
NSN 6105-01-319-0144
NSN 5999-01-260-4540
NSN 4140-01-467-1986
NSN 5930-00-555-1866
NSN 6105-01-144-8441
NSN 5935-01-463-2200
NSN 5998-00-145-6773