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

Plastic flat washer for helicopter general parts

The Hirobo HI2506046 flat washer is an RC plastic washer, sized 3 x 20 x 1T and marked KDC-B, designed for use in helicopter component assemblies. It functions as a spacer and spreads load where slim, low-profile support is required.

Typically fitted between tightened parts, the washer prevents direct plastic-on-plastic contact, centralizes shafts or screws, and helps preserve alignment during routine checks. The plastic material reduces metal-to-metal wear but may compress under very high clamp torque, so it is suited to light fastening duties.

Assembly notes: place the washer over the shaft or screw and ensure it sits flush; avoid overtightening to prevent distortion. Use multiple washers only when matching thickness is necessary and confirm there is no interference with rotating parts before finishing the build. Inspect washers during maintenance cycles and replace any that show flattening, cracks, or compromised fit.