A compact maintenance kit offering ten M4 x 12 cap screws for use in RC helicopters and compatible model assemblies that take M4 fasteners. The set is intended as general replacement hardware for standard fastening locations.
When fitting these screws confirm the mating thread and choose the correct driver to prevent cam-out. Apply moderate torque to avoid stripping threads or damaging thin model components. Treat these as service items rather than tuning parts and include them in routine checks of hinges, frames and gearboxes.
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