Some items from this specific schematic: Lock,box(type-2), Try,in,box*nh-122, Nut 6mm Open Stay, Seal,inner Box.
This part-list fiche shows all the components that make up the Nh80md Lead 1993 (p) England Mph Front Cover/inner Box .
The Screw,tapping,4x12 is the cheapest item from this partsfiche.