A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6240-00-739-0961
NSN 5990-01-124-9063
NSN 6650-00-883-4790
NSN 5935-00-536-3325
NSN 6110-00-234-9377
NSN 5835-00-707-6266
NSN 5998-00-394-7118
NSN 6650-00-131-7284
NSN 5965-01-113-7400
NSN 5965-01-431-5809
NSN 5998-00-281-5973
NSN 4140-00-823-9194