A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6135-01-415-1163
NSN 5910-01-604-3166
NSN 6110-00-305-2838
NSN 5990-00-855-1056
NSN 6130-00-707-5931
NSN 5930-00-396-0075
NSN 5935-01-545-2836
NSN 5996-00-578-9092
NSN 4140-01-063-7192
NSN 6135-01-187-0033
NSN 5920-01-444-2454
NSN 5990-01-400-3299