Precision Needle Pin 3 x 21.8 for Model Helicopters - Hirobo HI2509006  [HI2509006]

Precision needle pin for model helicopters

The Hirobo HI2509006 is a precision 3 x 21.8 needle pin designed for use in model helicopter assemblies that call for that dimension. It provides a reliable mechanical stop and retention point for linkages, brackets, and other small components during normal operation.

Installation notes: confirm bore dimension and tolerance before installing, ensure the pin seats without tilting, and secure it using the assembly's intended retention method, such as a circlip or grub screw. Avoid forcing pins into undersized holes, which can cause distortion.

Inspection and service: routinely check pins for straightness, surface wear, or corrosion after flying. Replace any pin with signs of damage rather than attempting to bend it back into shape to preserve control accuracy.