With a quantity of two pieces, the Screw, Pan Head(8be) is the most used part in the 44 HANDLE SWITCH & LEVER diagram.
The Bolt, Flange(6u1) is the cheapest item from this partsfiche.
Some items from this specific schematic: Screw, Pan Head(6g8), Screw, Pan, Switch, Handle 2, Bolt, Flange(6u1).