RC Helicopter 3 x 20 x 1T Flat Washer HI2506046 by Hirobo  [HI2506046]

RC flat washer for helicopter assemblies

The Hirobo HI2506046 flat washer is a plastic RC-scale washer intended for general helicopter parts use. Sized 3 x 20 x 1T and labeled KDC-B, it serves as a thin spacer and load distributor where low-profile support is required in small assemblies.

In practice the washer is installed between fastened components to prevent direct plastic-on-plastic contact, to help centralize shafts or screws, and to maintain alignment during routine servicing. Its plastic construction reduces metal-to-metal wear but can compress slightly under heavy clamping force, so it is best used where light fastening is expected.

Installation guidance: slide the washer onto the mating shaft or screw so it sits flush against the mating surface, and avoid over-tightening which can deform the part. Stack multiple washers only to reach needed thickness and always confirm clearance with rotating elements before final assembly. Check the washer during routine maintenance and replace it if you observe flattening, cracking, or loss of fit.