A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5835-00-482-0924
NSN 5965-01-328-9765
NSN 5945-00-741-3711
NSN 6145-01-301-4121
NSN 5920-01-627-8327
NSN 5925-00-148-8126
NSN 6135-01-236-8603
NSN 5855-00-688-9954
NSN 6320-01-558-8844
NSN 6240-01-062-0878
NSN 6685-01-418-4904
NSN 5975-00-580-0434