A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 7035-00-513-9764
NSN 6220-01-369-9927
NSN 5998-01-086-6715
NSN 6650-00-262-2324
NSN 5895-01-099-0491
NSN 5965-01-383-4675
NSN 5998-00-925-2012
NSN 5945-01-029-9628
NSN 5945-00-548-4727
NSN 6145-01-634-0388
NSN 6145-00-331-6814
NSN 5935-01-435-7265