A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5945-01-337-2385
NSN 6645-01-533-8408
NSN 5999-01-388-1989
NSN 5985-01-082-3814
NSN 5930-00-328-7299
NSN 5855-01-259-8376
NSN 2925-00-325-3421
NSN 5998-00-276-8599
NSN 5905-00-438-3378
NSN 7035-01-198-1512
NSN 7035-00-360-2008
NSN 5895-01-421-2484