A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5925-01-434-7483
NSN 5925-01-437-5854
NSN 6610-01-440-4314
NSN 6645-01-216-8682
NSN 7035-01-135-0050
NSN 7035-01-420-5404
NSN 5855-01-147-6024
NSN 6685-01-385-5344
NSN 6610-00-913-7069
NSN 5935-01-448-3437
NSN 5895-01-080-8031
NSN 4140-01-068-3500