A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6135-00-833-9909
NSN 6610-01-287-9814
NSN 5960-01-265-0354
NSN 5855-01-290-7035
NSN 6145-00-246-9776
NSN 5935-01-328-7030
NSN 6650-00-629-8027
NSN 5960-01-057-7096
NSN 5855-00-323-0967
NSN 5935-01-320-2811
NSN 2925-01-049-8906
NSN 5965-00-275-0491