The Hirobo HI2531010 kit provides ten M2 x 10 set screws designed for small-scale replacement use in RC helicopter and general RC component maintenance. Keeping a labelled pack is useful when compact threaded pins are needed to hold linkages, housings, or small assemblies together.
These fasteners serve a maintenance and fitment purpose rather than improving performance: they restore worn or missing screws, help re-establish correct assembly fit, and secure parts during workshop tuning and pre-flight inspections. Always check the thread diameter and length against the part being serviced to ensure proper compatibility.
Before installation, inspect each screw for thread integrity and replace any showing damage to prevent stripped threads. Store spares in a dedicated container so you can match them quickly to the corresponding components during maintenance.
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