In this schematic the "Bolt, With Washer (36x)" is used most often.
A sample from the products for the Side Cover 2 include: Seal 1, Collar (3x3), Grommet 654427240000, Bolt, With Washer (36x).
The lowest price component in this Side Cover 2 parts-list fiche is the Bolt, With Washer (36x).