A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6135-00-593-6831
NSN 5895-00-518-1593
NSN 5975-01-255-5348
NSN
NSN 5945-01-312-9416
NSN 5855-01-471-3162
NSN 4140-01-531-2788
NSN 5925-01-345-1422
NSN 5835-01-475-3101
NSN 6220-01-456-7083
NSN 6130-00-814-3078
NSN 5990-00-977-8096