A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6105-01-528-8027
NSN 5998-01-284-3650
NSN 5935-01-358-5989
NSN 2925-00-989-0523
NSN 5935-01-290-0579
NSN 6130-00-819-1266
NSN 5925-01-588-6568
NSN 5920-00-013-9967
NSN 5915-01-618-9431
NSN 6150-01-431-4344
NSN 5925-01-626-8112
NSN 2925-00-201-7138