A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 2925-01-316-7487
NSN 5996-00-205-2933
NSN 5905-01-595-4225
NSN 6320-01-355-3998
NSN 6150-01-352-3227
NSN 7035-00-329-4015
NSN 5985-01-287-9365
NSN 5996-00-316-5115
NSN 5920-01-227-6336
NSN 6105-00-305-5716
NSN 5905-01-062-1503
NSN 5895-00-227-1002