A sample from the products for the Rear Wheel/chain include: Washer,10.5x19x3.2, Bolt,socket,6x12, Damper,shock,rr Hub, Stud,10x35.
The Pin-cotter,4.0x35 is the lowest priced item on this Rear Wheel/chain schematic.
In this schematic the "Stud,10x35" is used most often.