A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 4140-00-067-2590
NSN 5925-00-892-1115
NSN 6105-01-604-7528
NSN 2925-01-459-8093
NSN 7035-01-497-2602
NSN 6130-01-165-9419
NSN 6240-00-196-6472
NSN 5895-00-224-0150
NSN 6645-00-544-8529
NSN 6620-01-495-7446
NSN 5990-01-432-4249
NSN 6150-00-669-6118