The most reasonably priced component used on the Tt250r Tt250rc 2000 (y) Usa California Starting Motor is the Nut.
Parts such as the Starting Motor: Starting Motor Unit, O-ring, Gasket, Brush Holder Assy are included in the Tt250r Tt250rc 2000 (y) Usa California Starting Motor parts fiche.
On this parts fiche the Bolt is the most specified component.