A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6240-00-402-4481
NSN 5905-01-020-6839
NSN 6130-01-508-7732
NSN 5975-01-397-4810
NSN 5905-01-167-8867
NSN 6645-01-215-9938
NSN 6220-01-447-7183
NSN 2925-01-068-3844
NSN 6320-00-586-5641
NSN 6685-01-272-3867
NSN 5935-01-634-0668
NSN 5835-00-406-5824