The Screw 6x10 is the lowest priced item on this Rear Swinging Arm (model W/x E18, E22, E24) schematic.
The Rear Swinging Arm (model W/x E18, E22, E24) is made up of components including this Swingingarm Assy,rr which is the most expensive.
Some items from this specific schematic: Bolt(10x37), Screw 6x10, Spacer,rear Swing Pivot,center, Spacer Comp,rear Swing Pivot.