This is an authentic replacement part manufactured for use with Toro snowthrowers. The ni lock nut is designed to prevent from being unthreaded from vibration. This nut is used with several different models of snowthrowers and is used with various applications. The nut is sold as an individual replacement part, please see model diagram for associative parts.
It is a genuine OEM sourced replacement part which is specially designed for use with Toro snowblowers. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality screw is made of durable metal and is sold individually.