A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6650-01-114-9514
NSN 5925-00-220-6841
NSN 6650-00-732-5031
NSN 5895-01-503-0192
NSN 6650-00-518-5194
NSN 6150-01-443-6221
NSN 4140-01-351-8962
NSN 6320-01-422-1212
NSN 6320-01-111-8851
NSN 5960-01-162-5638
NSN 5835-01-426-0069
NSN 6610-01-464-3037