A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6130-01-218-5217
NSN 6135-01-458-7476
NSN 6240-01-579-3758
NSN 5985-01-106-4628
NSN 5985-00-957-2444
NSN 5925-01-068-2887
NSN 5855-00-149-0766
NSN 5950-00-964-6744
NSN 5855-01-147-6024
NSN 5835-01-310-8979
NSN 5965-01-502-8850
NSN 5835-01-112-9008