This M 3.5x10 hex-socket tapping screw is an RC-scale self-tapping fastener intended for general replacement and maintenance of model components. It is handy when original fixings are missing or worn and when a reliable thread-forming screw is needed in plastics and thin alloys used on models.
To install, align parts, use the correct hex key or driver, and tighten with care to avoid over-compressing softer materials. These screws cut their own mating thread as they are driven in, so in most plastic assemblies pre-drilling will not be necessary, though for very hard substrates a pilot hole can help ensure consistent fitment.
During setup and tuning the screws secure chassis plates, electronics brackets, servo mounts, and body posts where a low-profile hex-drive fastener is preferred. Adjust torque to suit the application so you can keep parts stable without compromising material life.
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