The Screw.washer.4x6 is the lowest priced item on this Starting Motor schematic.
eight components are listed in the schematic for this Pk50sm Wallaroo 1991 (m) Belgium / Sel Starting Motor .
A sample from the products for the Starting Motor include: O Ring Start, Bolt Flang 6x20, Screw.washer.4x6, Guard,heat.