This Hirobo HI2509003 needle pin is an RC-scale replacement pin intended for general helicopter parts and linkages. The listed size 2 x 11.8 mm is given as the identifying dimension, and the part functions as a simple retained fastener in small linkage assemblies and mechanical joints used on model helicopters.
In typical use the pin locates and retains control rods, linkage ends, or small moving parts where a slim, straight fastener is required. Before fitting, confirm the pin diameter and length match the receiving hole and the clip or retainer style on your model to avoid excessive play or binding.
Carry out routine inspections: check the pin for straightness and surface wear, make sure any retainers remain secure, and replace the pin if corrosion or deformation is found. This item is supplied as an RC accessory for model helicopter maintenance and minor repairs.
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