This component is an RC silencer assemble screw identified as O.S. Engine OS44825400, sized M4x95 for fastening model exhaust silencers. It functions as a replacement fastener for radio-controlled exhaust assemblies that take M4 threaded hardware, keeping the silencer secured to the exhaust flange and preserving alignment for predictable back-pressure and tuning response.
Fitting advice: hand-start the screw to avoid cross-threading, align the silencer and exhaust pipe prior to final tightening, and inspect the joint after operation for any signs of leakage or loosening. Use the part only as intended for RC models.
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