A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6135-00-008-5345
NSN 6130-00-852-0689
NSN 6220-00-968-6665
NSN 6130-01-549-0051
NSN 5945-01-529-1994
NSN 6620-01-085-8688
NSN 6110-01-529-3388
NSN 6240-01-184-6831
NSN 5945-00-187-2822
NSN 5945-00-055-3438
NSN 6320-01-054-3046
NSN 6240-01-090-2280