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 5935-01-309-7773
NSN 5910-00-522-5208
NSN 5910-00-937-2632
NSN 5975-01-633-7089
NSN 6145-01-613-4541
NSN 6145-00-174-9344
NSN 6240-01-516-5589
NSN 5996-00-952-3452
NSN 5945-00-011-3945
NSN 6220-01-432-7629
NSN 5945-00-363-9481
NSN 5935-01-580-2922