The Screw,tapping,4x10 is the lowest priced item on this Seat/rear Cowl schematic.
The Seat/rear Cowl assembly is constructed from several parts from which the Seat Assy,double is the most expensive.
A sample from the products for the Seat/rear Cowl include: Key,seat Lock, Screw,pan,6x14, Bolt,socket,8x50, Bolt,socket,8x25.