The Screw,flat,6x35 is the cheapest item from this partsfiche.
A sample from the products for the F-18 include: Collar,thrust Piv, Bolt,flange,6x22, Nut,flange 8mm, Rollar,chain Tens.
The F-18 is made up of components including this Swingarm Sub Assy which is the most expensive.