A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5920-01-511-2981
NSN 5835-00-572-7445
NSN 5895-01-063-8104
NSN 6135-01-301-8776
NSN 5915-01-316-5673
NSN 6105-00-488-5425
NSN 5910-00-711-8497
NSN 5895-01-421-4160
NSN 6620-01-166-4893
NSN 6150-00-840-9346
NSN 5905-00-083-3730
NSN 5835-01-064-0859