A sample from the products for the Rear Combination Lamp (vzr1800z L1 E3) include: Spacer(6.5x9x8), Clamp(l:45), Cover,license Lamp, Clamp(l:45).
The Screw is the cheapest item from this partsfiche.
In this schematic the "Washer(5.5x20x1.2)" is used most often.