HIROBO HI2526002 M3 Stopper 3 x 7 x 5 Threaded Stopper for RC Helicopter Parts  [HI2526002]

M3 Stopper for Helicopter Parts

This M3 stopper is an RC-scale accessory used to limit axial movement and provide repeatable positioning on assemblies that use M3 threaded shafts. It is intended for model helicopter and general RC applications where compact mechanical stops are required without altering primary components.

Compatibility: the part is intended to mate with components that accept standard M3 threads or shafts. Check the mating thread and seating clearance on your linkage, rotor hub, or small bracket before installation to ensure correct fit and movement range.

Installation and tuning role: thread the stopper onto the M3 shaft until it sits at the desired stop point, then verify free play and contact surfaces during slow trial rotations or control throws. Use small incremental adjustments to set end-play limits for swashplates, linkages, or rotor assemblies. Regular inspection during routine maintenance helps catch wear or loosening that could affect trim or control response.

Maintenance notes: keep mating threads clean and free of debris, confirm that the stop does not bind moving parts, and replace if signs of deformation appear after repeated service cycles.