In this schematic the "Screw-washer,4x16" is used most often.
The Screw-washer,4x10 is the lowest priced item on this Carb. Component Parts 1 schematic.
A sample from the products for the Carb. Component Parts 1 include: Piston Set,vacuum, Screw Set A, Pin Cotteer,1.0mm, Pin Cotter 1.0mm.