The twelve Diavel 2018 Uk (diavel Fl) D170-00018 32a Fuel Pump [mod:dvl] component parts are all listed in this schematic.
This 32A FUEL PUMP [MOD:DVL] assembly utilises six Screw Tef M5x16(s) - the highest specified component.
Some items from this specific schematic: Flange, Screw Tceif M5x12, Fuel Level Gauge, Gasket.