This Hirobo HI2509003 needle pin serves as an RC replacement fastener for general helicopter linkages and small mechanical joints. The dimension 2 x 11.8 mm identifies the pin and indicates the narrow profile used to retain rods and linkage components on model helicopters.
In service the pin holds control rods and linkage ends where a straight, slim fastener is needed. Before use, verify the pin diameter and length match the receiving hole and the retainer method on your model to prevent unwanted lateral play or binding.
Inspect pins regularly for straightness, surface wear, and corrosion; ensure retainers remain secure and replace the pin at the first sign of deformation or significant wear. This part is listed as an RC accessory intended for maintenance and minor repairs on model helicopters.
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