The lowest price component in this Rear Fork - Chain Case parts-list fiche is the Nut,hex.,8mm.
Some items from this specific schematic: Nut,hex.,8mm, Cap,dust Seal, Washer,plain,8mm, Bolt,stopper Arm.
The twenty-three Cb250rs 1982 (c) South Africa Rear Fork - Chain Case component parts are all listed in this schematic.