A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6130-00-578-5315
NSN 6145-00-141-8095
NSN 4140-01-466-7195
NSN 6110-00-426-6778
NSN 5855-01-594-7809
NSN 5990-01-061-5618
NSN 6130-01-235-9103
NSN 5945-01-030-1261
NSN 5835-00-665-3395
NSN 5935-00-238-8941
NSN 5996-01-394-5768
NSN 5920-01-468-6227