The component with the lowest price in the REAR HUB/BRAKE/CHAIN ('80-'81 KE schematic is the Washer-plain-small,6m.
In this schematic the "Stud,8x17" is used most often.
This Drum Assy,rear Brake is the most expensive of the items that make up this Rear Hub/brake/chain ('80-'81 Ke assembly.