A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5960-00-115-2199
NSN 6105-00-212-8013
NSN 7035-00-834-2090
NSN 5945-00-234-6911
NSN 6685-01-436-2337
NSN 6620-01-449-2730
NSN 4140-01-450-7649
NSN 6320-01-261-5983
NSN 6620-01-331-4881
NSN 6130-00-800-9153
NSN 5935-01-385-2155
NSN 5910-00-648-8975