On this parts fiche the Nut,10mm is the most specified component.
The Kz1000a2 Kz1000 1978 Canada Rear Hub/chain ('77-'78 A1/a2/a2 consists of twenty-five pieces with the Drum Assy, Rear Brake being the most expensive.
twenty-five components are listed in the schematic for this Kz1000a2 Kz1000 1978 Canada Rear Hub/chain ('77-'78 A1/a2/a2 .