The Solution

The Hardlock Nut, designed to be simple, robust, re-useable and more effective at resisting loosening by shock & vibration than any other locking nut.

The Hardlock uses a mechanical principle that makes it unique.  This is how it works:

The Hardlock functions by utilising two nuts that work together.  The cone on the lower nut is off-set, so that when tightened against the upper nut, vertical and horizontal locking forces engage the screw thread.

Hardlock Multi Language Brochure

A brief description of how Hardlock works has been prepared in 11 languages.  Why not download the PDF or share the link with colleagues ?

RAIL HOME – click here

THE PROBLEM – click here


THE EVIDENCE – click here