A sample from the products for the 030 Frame include: Screw M5x18, Stay, Fuel Tank, Washer, Nylon 11x5.2x0.5, Nut, Self-locking M6.
On this parts fiche the Rubber Pad is the most specified component.
The Washer, Nylon 6x12x0.5 is the cheapest item from this partsfiche.