The Stihl Fastener (Part Number 9022 371 1020) is an essential component designed to ensure a secure hold for key equipment parts, enhancing the overall performance of your Stihl power tools. This spline screw features a unique spline head that requires a specialized screwdriver for tightening, making it a reliable choice for various applications. With a 5mm M5 thread and a length of 20mm, this fastener is compatible with a wide range of Stihl equipment, including chainsaws, concrete cut-off saws, leaf blowers, grass trimmers, and hedge trimmers. Trust the Stihl Fastener for optimal functionality and durability in your outdoor power equipment.