A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 7035-01-503-2362
NSN 5925-00-964-7901
NSN 5895-00-104-4583
NSN 6135-01-124-2376
NSN 5950-01-068-6415
NSN 5950-01-385-7857
NSN 5960-01-170-4057
NSN 6105-01-485-6629
NSN 6130-01-516-2690
NSN 6685-01-221-9410
NSN 5930-00-759-8421
NSN 6240-01-519-2935