Of all the components that make up this Cylinder Head the Nut,square,5mm has the lowest price.
On this parts fiche the Guide,in Valve (o is the most specified component.
Parts such as the Cylinder Head: Bolt Stud 8x24, Band B,insulator, Cover,starter, Packing are included in the Cb600f Hornet 2010 (a) European Direct Sales Cylinder Head parts fiche.