This is a genuine replacement part sourced directly from the manufacturer. The hex lock nut is commonly found in power tools and yard equipment from Craftsman, such as radial saws and snowblowers. This part is made of metal, and is generally used with a bolt or threaded shaft to secure components in the machine. It may be found in vari...Read moreous locations in the machine, depending on model. Please be aware that there are different nuts used in the machine. Refer to the parts diagram to be sure of ordering the correct part. You will require a wrench when replacing this item. This is an individually sold part.