This Kyosho 1-S13028H component is an M3x28 button head screw with hex drive, supplied in five pieces for KC10 chassis applications. It is intended as a replacement fastener where a short, low-profile head and M3 threaded shaft provide secure chassis fixation.
For best results use the correct hex driver and apply controlled torque to avoid stripping the recess or damaging mounting surfaces. Check the replacement against the original fastener length and thread fit prior to final assembly; these screws are practical to keep as tuning and track spares.
This description should not be taken to imply suitability beyond KC10 chassis fittings, and do not substitute these screws where a particular thread form or material grade is required by the application.
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