A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5930-01-163-3416
NSN 6135-01-604-8739
NSN 6620-01-032-3937
NSN 6145-01-317-2686
NSN 6110-01-240-5704
NSN 5905-01-536-5748
NSN 5905-00-363-9689
NSN 5985-01-259-7879
NSN 5910-00-240-3001
NSN 6135-01-655-1759
NSN 6610-01-254-4196
NSN 5930-01-394-3738