A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5915-01-248-9160
NSN 6610-00-664-2190
NSN 6105-01-193-4084
NSN 6685-01-013-8915
NSN 5935-00-191-1978
NSN 5835-01-514-5758
NSN 5835-00-905-7165
NSN 6145-00-990-1272
NSN 6620-01-526-1478
NSN 5905-01-392-3091
NSN 6145-01-556-8015
NSN 7035-01-314-6428