The Ybs67-5 Washer, Spring is the cheapest item from this partsfiche.
fifty components are listed in the schematic for this 30mhr/err (30mshr/mlhr/esrr/elrr) 1993 Optional Parts Switch Panel - Rigging Accessories .
With a quantity of four pieces, the Screw(6k0) is the most used part in the OPTIONAL PARTS SWITCH PANEL - RIGGING ACCESSORIES diagram.