Hirobo HI2509021 Linkage Needle Pin 1.5 x 7.8mm for Precision  [HI2509021]

Slim pin for precise linkage movement

The Hirobo HI2509021 needle pin is a 1.5 x 7.8mm component intended to hold small linkages and clevises in alignment on helicopters and other RC models. Its slim profile makes it useful where a compact locating pin is required.

Installation should prioritise accurate alignment and smooth seating: verify the bore diameter, remove any sharp edges, and press the pin until it sits without sideways movement. In tuning scenarios these pins keep geometry stable while permitting the necessary rotation at joints.

Replace pins that show bending, severe surface wear, or corrosion to prevent added play that can disturb trim and control responsiveness.