This HANDLE LEVER/SWITCH/CABLE assembly utilises two Cover,lock Nut(s) - the highest specified component.
Some items from this specific schematic: Mirror Assy.l Bac, Bolt,flange Sh 6x, Screw Flat 3x16, Nut,hex.,10mm.
The lowest price component in this Handle Lever/switch/cable parts-list fiche is the Screw Flat 3x16.