Hirobo HI2506065 4.1 x 5.1 x 0.1T Flat Washer for RC Helicopter Assemblies  [HI2506065]

Precision 0.1T flat washer

This Hirobo HI2506065 flat washer is a slim RC-scale spacer made for helicopter and small model assemblies. The stamped size 4.1 x 5.1 x 0.1T denotes inner diameter, outer diameter and nominal thickness, so it suits situations where only a minimal thickness change is needed to correct clearances or refine alignment between mating parts.

In routine maintenance and setup the washer serves as a micro shim: adding or removing a single 0.1T washer can alter shaft endplay, bearing preload, or gear mesh by a subtle but measurable amount. As a flat washer it provides even contact across a bearing seat or fastener head to distribute load and limit lateral movement.

Installation notes: treat this as an RC-grade spacing element, verify orientation when applicable, and stack washers only when the assembly tolerances call for it. For tighter fits, prefer small incremental thickness changes rather than large jumps to maintain drivetrain balance and component alignment.