Some items from this specific schematic: Pin,dowel,6x10, Rotor,outer, Rotor,inner, Shaft Comp,oil Pu.
On this parts fiche the Bolt,hex.,6x22 is the most specified component.
The most reasonably priced component used on the Nps50 Zoomer 2008 (8) Japan Af58-170 E-8 is the Screw Cross 3x10.