The Lock Nut M5 (MPN 9214 320 0700) is a high-quality, genuine Stihl OEM fastener designed specifically for outdoor power equipment. Crafted from durable metal, this lock nut is essential for securing vibration-prone assemblies, ensuring safe and reliable operation during use. This self-locking fastener is commonly utilized in various Stihl products, including chainsaws, brushcutters, hedge trimmers, Kombi engines, and cut-off saws. Replacing worn or damaged lock nuts with the Lock Nut M5 helps maintain optimal performance and longevity of your equipment.