In this schematic the "Nut,flanged,8mm" is used most often.
Of all the components that make up this Crankshaft/piston(s) the Circlip,piston Pin has the lowest price.
Some items from this specific schematic: Bushing,#1,blac, Crankshaft-comp, Circlip,piston Pin, Bushing,#2,blue.