A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6645-01-379-2769
NSN 5999-00-155-3088
NSN 6240-01-279-0552
NSN 4140-01-109-3882
NSN 5990-01-113-0303
NSN 5910-01-364-0513
NSN 6110-01-553-3279
NSN 6105-00-972-9002
NSN 5965-01-043-9357
NSN 5835-01-424-0054
NSN 7035-00-541-8516
NSN 6610-00-138-0740