As of May 1, 2021 our website no longer supports Internet Explorer 11.

We recommend that you update your browser here.

Microsoft Edge | Firefox | Chrome

Free Domestic Shipping at $99

Fuji THIN Lock Nut

Steel Class 4, Zinc


Buy in bulk & save
Select options above to see pricing.

This configuration is not available. Make another selection.


Detail & Specs

This configuration is not available. Make another selection.

Fuji Lock Nut / Low Height Thin Style / Class 4 Steel 

Fuji hex locking nuts can be installed and removed multiple times. The locking mechanism for this nut is a set of two or three retaining teeth made of spring steel. The interference between the locking teeth and the threads of the mating bolt prevents loosening during vibration.

The all metal construction is better for higher temperature installations where a nylon-insert lock nut might fail.

Class 4 Steel
Zinc Plated finish provides corrosion resistance

Also known as metric spring stop nut or Fujilock nut, all-metal spring-lock hex nut, 360 degree prevailing torque nut.