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

Precision 3x8x1mm collar spacer

The Yokomo YOKZCA3810B is supplied as a pack of four collars and is classed within the shim/collar/washer/spacer group of general R/C parts. The 3x8x1mm dimension shown in the product name provides a clear sizing reference for model builders and tuners working on shaft and wheel assemblies.

Typical uses include making fine axial spacing adjustments, preventing unintended axial movement, and closing small gaps where a thin collar is required. This part is useful in setups where consistent, repeatable spacing improves alignment and reduces lateral play on matching shaft diameters.

Installation is straightforward: slide the collar onto the mating shaft or axle at the desired position, secure surrounding fasteners or bearings per your chassis arrangement, and verify clearance while the assembly turns. During tuning, use a feeler or small gauge to confirm axial tolerance and adjust incrementally to avoid over-constraining rotating components.