Of all the components used in this assembly the Frame is the most expensive.
The most reasonably priced component used on the Kh500a8 1976 Canada Frame/frame Fittings ('73-'75 D/ is the Ball-steel,1/4.
A sample from the products for the Frame/frame Fittings ('73-'75 D/ include: Washer-lock,6mm, Nut,lock,8mm, Washer-spring,6mm, Band,battery Case.