A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6105-00-902-2191
NSN 5930-01-559-9465
NSN 5915-01-040-6772
NSN 6610-01-592-4150
NSN 5855-00-337-3679
NSN 6105-01-412-0697
NSN 6135-01-613-1464
NSN 7035-00-153-3826
NSN 5990-01-198-0115
NSN 6240-01-026-1376
NSN 6645-01-480-0662
NSN 5950-01-634-0677