A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5985-01-189-7656
NSN 6610-01-146-8061
NSN 6110-01-551-5644
NSN 6650-01-129-1000
NSN 5999-01-065-0455
NSN 5990-01-200-7460
NSN 5965-01-568-4103
NSN 2925-00-604-7487
NSN 5925-01-411-6028
NSN 6610-01-011-8742
NSN 5920-00-761-0134
NSN 5930-00-722-2477