A sample from the products for the Transmission include: Circlip,28mm, Gear,c-3, Washer Spline 28x, Washer Lock,28mm.
In this schematic the "Washer Spline 28x" is used most often.
The most reasonably priced component used on the Cb600fa3 Hornet 2010 (a) France / Abs Cmf St Transmission is the Bolt,flange 6x14.