The Shim(10x20x1) is the lowest priced item on this Starter Clutch schematic.
On this parts fiche the Bolt(8x16) is the most specified component.
A sample from the products for the Starter Clutch include: Limiter Assembly,starter Idler Gear, Bush,limiter Gear Shaft, Bolt(8x16), Limiter Assembly,starter Idler Gear.