The most expensive part in this assembly is the Lining, R. *nh178l*.
Of all the components that make up this Side Lining the Screw,tapping 6x1 has the lowest price.
Some items from this specific schematic: Lining,l *nh167l*, Screw,tapping 6x1, Seal L,qtr Hole, Screw,tapping,(po)4x.