The most reasonably priced component used on the Z1000r2 1983 Europe Uk It Nr Sd St Generator is the Screw-pan Head,5x12.
A sample from the products for the Generator include: Bolt,12x40, Screw-pan Head,5x12, Washer-spring,5mm, Regulator-voltage.
In this schematic the "Bolt,socket,6x30" is used most often.