A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6135-00-738-5571
NSN 5905-01-438-5571
NSN 5985-01-232-1206
NSN 6650-01-217-0303
NSN 5998-01-227-6359
NSN 5998-00-192-9390
NSN 6110-01-478-2275
NSN 6145-00-372-3713
NSN 6130-01-452-5512
NSN 5935-01-361-0415
NSN 5835-00-841-2650
NSN 5855-00-055-1579