1686689 Simplicity Lawn Mower - Overview

BOLT, 5/16-18 x 3/4" Short Neck Carriage, GR 5

This centerlock nut, also known as a flange nut or hex nut flange is a manufacturer approved replacement part. It is 5/8 of an inch with 18 threads per inch. The nut is designed to secure the bolt or screw it is positioned on and prevent it from loosening during use. It has a series of ridges on the inside that allow it to grip the thread...Read mores of the bolt or screw and a flange at its base to provide a larger surface area to clamp on. Over time the lock nut may break or become stripped. Inspect all the centerlock nuts on your equipment as you may need to order more than one for your repair. To install a new nut, use your hands to thread it on and use a pair of pliers or a wrench to tighten it until it is securely held. Be careful not to overtighten the nut as this can deform the nut and wear down the threads that keep it secure. If you experience difficulties removing or tightening the nuts, use a centerlock nut tool or a cassette lockring tool instead. Note that this nut is sold individually.