On this parts fiche the Screw is the most specified component.
The most reasonably priced component used on the Sbk959 2018 Usa (superbike 959 Panigale Corse) D220-00018 032 - Tank is the Washer 6.2x20x1.5.
The sub assemblies and components that make up this 032 - Tank include this Fuel Tank, the most expensive part.