Yokomo YOKZCS305 Shim 3.1 x 5 x 0.05mm Precision Spacer  [YOKZCS305]

Small-format spacer for assemblies

This RC shim is 3.1 x 5 x 0.05mm as listed in the product name and acts as a compact spacer for fine adjustments in model assemblies. It works well when consistent micro-thickness increments are required to set bearing preload, adjust gear mesh, or trim shaft endplay without altering component geometry.

Installation is straightforward: place the shim onto the shaft or mating surface before fitting the adjoining part, measure stack thickness with a caliper or feeler gauge if available, then torque fasteners while watching for shim compression. Multiple shims may be layered to reach desired thickness; ensure mating surfaces are clean to avoid debris-induced misalignment.

Sold as a general-purpose accessory, this shim is suitable for R/C uses such as axle connections, gearbox spacer stacks, servo horn seating, and bearing endplay corrections. Because it is a thin part, handle gently and store flat to prevent bending.