A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5960-00-153-7115
NSN 6320-01-194-1253
NSN 5905-00-186-0942
NSN 6610-01-327-3187
NSN 5905-01-597-1705
NSN 5905-01-004-9758
NSN 5996-01-094-5587
NSN 4140-01-474-5007
NSN 6130-01-386-2894
NSN 6220-00-707-5044
NSN 6685-01-378-9729
NSN 5960-00-831-8683