Yokomo YOKZCS320 - Shim 3.1 x 5 x 0.2mm thin shim for R/C chassis shimming  [YOKZCS320]

Thin 3.1 x 5 x 0.2mm R/C shim

This is an RC-scale shim intended for precision spacing and tolerance adjustments on model car chassis. The listed dimension 3.1 x 5 x 0.2mm identifies the shim size and thickness used when matching parts for axial clearance or gear mesh corrections.

Use cases include fine-tuning axial play on shafts, adjusting bearing preload, and trimming mesh between spur and pinion where minimal thickness changes matter. The shim is a simple mechanical spacer that lets you incrementally change stack height without modifying components.

Installation is straightforward: clean mating surfaces, place the shim at the desired interface, and reassemble. Test free rotation and drive engagement after each change, adding or removing thin shims until the desired clearance and drivetrain feel are achieved.