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 5935-01-239-3572
NSN 5905-01-101-5780
NSN 5920-01-198-6216
NSN 5975-00-297-3940
NSN 5945-00-621-6387
NSN 5920-01-505-7409
NSN 6110-01-237-2548
NSN 5960-00-269-3023
NSN 5905-00-241-5643
NSN 5895-01-436-0057
NSN 6110-00-624-1906
NSN 5950-00-362-5661