eleven components are shown in this Kaf400-a8f Mule610 2008 Usa / 4x4 Fuel Tank(a8f∼aaf)(ca) exploded diagram.
On this parts fiche the Screw is the most specified component.
The sub assemblies and components that make up this Fuel Tank(a8f∼aaf)(ca) include this Tank-comp-fuel, the most expensive part.