eighteen components are shown in this Sf848 2012 Eu (streetfighter 848) 9151-3321a 013 Cylinder Head: Timing System exploded diagram.
On this parts fiche the Screw Tc M6x12 is the most specified component.
The Woodruff Key 3x5 is the lowest priced item on this 013 Cylinder Head: Timing System schematic.