Hirobo HI2506030 Flat Washer 4 x 22 x 1T Plastic KDC-B  [HI2506030]

Flat washer for helicopter parts

This Hirobo flat washer is a small-scale RC accessory intended for helicopter general parts where a thin, durable spacer is required. The KDC-B plastic construction keeps weight low while providing consistent surface contact under nuts or screw heads. As a non-structural component, its role is to distribute clamping force and help maintain alignment at joint interfaces in model assemblies.

Installation is straightforward: place the washer between the fastener head and mating surface to increase bearing area and reduce local deformation. In rotor head and linkage areas a thin 1T profile helps avoid added stack height that can interfere with blade or linkage travel. Check for proper seating and clearance after installation, and replace if the washer shows visible wear or deformation.

Tuning and maintenance note: when adjusting rotor head or control linkages, use the washer to fine-tune spacing without changing screw length. Because it is a plastic part, avoid over-tightening which can compress or shear the washer; inspect periodically during setup checks.