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 6110-01-432-8264
NSN 6650-01-391-1815
NSN 6645-00-240-9762
NSN 5935-01-453-6809
NSN 6220-01-020-7596
NSN 6110-01-633-9660
NSN 5935-01-553-3158
NSN 5999-01-383-1580
NSN 5975-00-102-7425
NSN 6320-01-435-5991
NSN 7035-00-177-1557
NSN 6610-01-156-0810