Spanish to English Tech/Engineering Automotive / Cars & Trucks failure analysis report

In a failure analysis report of a flexible coupling I can't find the exact technical term for "lámina." It's a component of the flexible coupling on a brake disc, more specifically for the flange shaft and flange disc. I have photos if you can identify this flat element shaped like a rachet. In this context, I'm leaning toward "plate" but I know there must be a established technical term in English.