A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5935-01-037-1645
NSN 5925-01-287-9206
NSN 5996-01-365-2246
NSN 5835-01-028-2025
NSN 6110-01-511-0201
NSN 5895-01-376-0482
NSN 6220-00-517-9300
NSN 6130-00-369-0624
NSN 5950-00-307-7963
NSN 5975-00-516-1771
NSN 6610-01-319-5039
NSN 5999-00-488-6245