A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5920-01-152-1949
NSN 6135-00-010-5275
NSN 5930-01-328-8510
NSN 5930-01-528-8348
NSN 5975-01-381-3218
NSN 5975-01-092-5713
NSN 5965-00-457-2496
NSN 6110-01-478-9941
NSN 6145-01-616-6190
NSN 5915-01-057-6798
NSN 5835-00-356-3825
NSN 5945-01-373-6332