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

Linkage retention pin for small helicopters

This scale replacement pin is intended for helicopter servicing and small-part swaps. The HI2509019 denotes a 2 x 28 parallel pin suitable for Hirobo helicopter general parts, providing a simple retention solution in linkages and joint assemblies on compact radio-controlled helicopters.

Functionally it acts as a compact locating and retaining item: fitted through matching parts it limits axial movement and helps preserve control linkage alignment. Being a basic mechanical connector, it reduces end-play and secures repeatable pivot points that influence servo throw and overall trim stability.

Installation notes and practical tips:

• Make sure holes line up before insertion to avoid bending the pin or damaging mating components.
• Fit with the correct orientation and ensure the pin is flush with neighbouring parts to keep linkage geometry intact.
• Include pin checks in routine maintenance and replace after any hard landing or if you see bending, play, or corrosion.