Yokomo YOKZCA3810B - 3x8x1mm Collar Spacer, 4pcs  [YOKZCA3810B]

Collar spacer for general R/C use

The Yokomo YOKZCA3810B is a small-scale collar spacer supplied as a pack of 4 pcs and designed for use within the shim/collar/washer/spacer category of R/C general parts. Its 3x8x1mm dimension is indicated in the product name and serves as the physical size reference for builders and tuners working on model shaft and wheel assemblies.

Use cases focus on precise spacing adjustments, preventing axial movement, and taking up small gaps where a thin collar is required. The part is intended for installations where consistent, repeatable spacing improves alignment and reduces unwanted lateral play in assemblies that use matching shaft diameters.

Installation is straightforward: slide the collar onto the mating shaft or axle at the required position, secure surrounding fasteners or bearings per your chassis setup, and verify clearance during rotation. When tuning, consider using a feeler to confirm axial tolerance and make incremental changes to avoid over-constraining rotating components.