Hirobo HI2509019 Parallel Pin 2 x 28 for Hirobo Helicopter Parts  [HI2509019]

Parallel pin for helicopter linkages

This is a scale RC replacement pin produced for helicopter maintenance and small-part replacement. The HI2509019 designation identifies a 2 x 28 parallel pin intended for use within Hirobo helicopter general parts, serving as a simple retention element in linkages and joint assemblies on small radio-controlled helicopters.

Functionally it acts as a compact locating and retaining element: when fitted through matched components it limits axial movement and helps preserve alignment in control linkages. Because it is a basic mechanical connector, its role during setup and tuning is to minimise end-play and provide repeatable pivot points that affect servo throw precision and trim stability.

Installation notes and practical tips:

• Verify hole alignment before insertion to avoid bending the pin or deforming mating parts.
• Use correct orientation and ensure the pin seats flush with surrounding components to maintain linkage geometry.
• Inspect for wear or corrosion during routine checks and replace if any visible deformation is present to avoid added play.