In this schematic the "Washer,oil Bolt" is used most often.
Some items from this specific schematic: Bolt,hndl Pivot, Washer,oil Bolt, Bolt,flange,6x22, Sub Assy,fr M/c.
The most reasonably priced component used on the Cb250 1994 (r) Portugal Front Brake Master Cylinder is the Screw,flat,4x12.