Parts such as the Crankcase Cover: Bolt(6x50), Cap,clutch Release Adjust, Plug,engine Oil Filler, Gasket,generator Cover (nas) are included in the Gsxr600 2007 (k7) Usa (e03) Crankcase Cover parts fiche.
On this parts fiche the Bolt(6x30) is the most specified component.
The Crankcase Cover assembly is constructed from several parts from which the Cover,clutch is the most expensive.