Hirobo HI2506046 Flat Washer 3 x 20 x 1T Plastic for Helicopter General Parts  [HI2506046]

Flat washer for helicopter parts

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

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

Installation notes: fit the washer over the mating shaft or screw, ensure it sits flush against the mating surface, and avoid over-tightening which can deform the washer. For stack-up adjustments use multiple washers only when matching thickness is required and confirm clearance with rotating parts before final assembly. Regular inspection during maintenance will reveal any flattening or wear that indicates replacement is needed.