The Spg/washer,6mm is the lowest priced item on this Electric Plate - C.d.i. Unit schematic.
This C.d.i.unit is the most expensive of the items that make up this Electric Plate - C.d.i. Unit assembly.
This ELECTRIC PLATE - C.D.I. UNIT assembly utilises five Bolt,flange 6x14(s) - the highest specified component.