In this schematic the "Bolt, Flange (7t2)" is used most often.
The Bolt, Flange (7t2) is the lowest priced item on this Middle Drive Gear schematic.
A sample from the products for the Middle Drive Gear include: Shim, Pinion, Holder, Washer, Plate (1j7), Oil Seal (35x63x16.5-1j7).