This Ni Nut-Lock, or Nylock Nut, is a Silver 1/4 x 20 metal nut. Sold individually, it can be adjusted using a wrench or socket and torque wrench to the manufacturer specfications, and is used to secure the sheer pin in place, on the impeller assembly. These nuts are a one-time use part due to their locking mechanism. You'll know the nut...Read more has broken when it appears to have damaged threads or rounded off edges.
Customers found this to be an easy repair.
This replacement hardware is sourced from original equipment manufacturer for use with Toro snowthrowers. It is standard hardware which has multiple applications, please refer to appropriate diagrams for correct location and use of this locknut. This part is made from durable metal and it is sold individually.