A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 4140-01-416-4898
NSN 5915-01-472-7169
NSN 5945-01-530-1867
NSN 5950-01-124-5266
NSN 5905-01-481-3040
NSN 5895-00-387-4901
NSN 6150-01-634-0575
NSN 5910-00-825-2736
NSN 5935-01-239-7510
NSN 2925-01-432-8452
NSN 6150-01-532-1076
NSN 5960-01-467-7516