A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5945-00-692-2183
NSN 6620-00-100-4517
NSN 5835-01-264-8782
NSN 6105-01-125-6498
NSN 6145-01-232-0309
NSN 5950-00-547-0306
NSN 6105-01-265-4023
NSN 5930-01-642-5593
NSN 6620-00-596-1951
NSN 5895-00-518-1593
NSN 6110-00-911-4000
NSN 5905-01-032-5375