A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 7035-00-252-7467
NSN 6240-00-382-5889
NSN 5855-01-095-5299
NSN 5960-01-223-1203
NSN 6645-00-674-9728
NSN 6110-01-489-5482
NSN 5855-01-561-2677
NSN 5935-01-439-5544
NSN 6130-01-102-8181
NSN 5930-01-010-3283
NSN 5920-01-633-6735
NSN 5915-01-561-4967