138-3121 Toro Stump Grinder - Overview

The Ni Lock Nut (Nylock Nut) is a Silver, 5/16x18, individually sold metal nut. It can be adjusted and replaced using a wrench or socket and torque wrench to the manufacturer specfications, and is used to secure the sheer pin in place on the augur. These nuts are a one time use part due to their locking mechanism. You'll know the nut has...Read more broken because the augur will not spin, and this is when the part should be replaced. Customers found this to be an easy repair.

It is a genuine manufacturer sourced replacement part that is specially made for Toro lawn mowers. A lock nut is a type of nut that resists loosening when properly threaded onto a bolt. This hardware has multiple applications depending on the model of your mower, please make sure to check appropriate diagrams for correct use and application of this item. Note this durable metal lock nut is sold individually.

It is a genuine replacement part that is supplied by the original manufacturer for use with Toro snowthrowers. This is a special hardware which helps to secure the scraper blade assembly, please make sure to check appropriate diagrams of your model for the correct application of this screw. It is a high-quality component which is made of durable metal and is sold individually.