Parts such as the Crankcase: Bolt,6x50, Gasket,drain Plug (nas), Seal-oil,13x22x5.5, Seal-oil are included in the Klx140-acf 2012 Usa Crankcase parts fiche.
In this schematic the "Bolt,6x50" is used most often.
eighteen components are shown in this Klx140-acf 2012 Usa Crankcase exploded diagram.