A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6620-01-542-8709
NSN 5915-01-322-6245
NSN 6130-00-587-6104
NSN 5855-01-069-4742
NSN 5998-01-118-8704
NSN 5985-00-597-2966
NSN 4140-00-679-9512
NSN 5998-01-206-8372
NSN 4140-01-422-8443
NSN 6645-01-567-8282
NSN 6320-01-170-4068
NSN 6105-01-634-0322