This METER assembly utilises four Nut, Hexagon (663)(s) - the highest specified component.
Some items from this specific schematic: Cover, Meter, Bolt, Flange (3y1), Ybs67-5 Washer, Spring, Screw, Bind (8j0).
The most reasonably priced component used on the Cs340en Ovation 1989 Meter is the Bolt, Flange (3y1).