05-42RY01 (1990) Toro Lawn Mower - 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.

This spindle shaft is designed for riding and garden lawn mowers to support smooth, stable blade rotation within the cutting deck. Built for durability and precise fit, it helps maintain consistent cutting performance and reliable operation under regular mowing conditions. It’s a practical replacement for restoring proper deck function when a spindle shaft becomes worn or damaged.