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 6320-00-456-0836
NSN 5998-01-398-9025
NSN 4140-01-322-4591
NSN 6150-01-659-0877
NSN 5935-01-097-9819
NSN 5935-00-186-8729
NSN 6240-00-764-1580
NSN 5925-01-357-9402
NSN 6130-00-382-1730
NSN 6130-00-518-1723
NSN 5996-01-078-1413
NSN 5895-01-654-7154