A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5915-01-369-4719
NSN 5910-00-128-0414
NSN 6610-01-232-4802
NSN 5985-00-782-7639
NSN 6105-00-161-8070
NSN 5999-00-685-9957
NSN 5935-01-550-0856
NSN 5999-01-317-3990
NSN 2925-01-456-6840
NSN 6135-01-066-6904
NSN 6650-00-527-7451
NSN 5975-00-078-4336