Wedge-Locking Technology

Nord-Lock created the original wedge-locking technology that secures bolted joints, even when exposed to severe vibration and dynamic loads. It is impossible for our products to loosen unintentionally due to the wedge created underneath the bolt head and nut.

Torquelator by Nord-Lock

Torquelator is a torque calculating application that runs on mobile devices as well as from your computer.

Torquelator calculate pre-load and corresponding torque for bolted joints secured with Nord-Lock washers. Choose between two different calculation methods (Kellermann&Klein and VDI2230), select the bolt size (metric and imperial), the bolt grade and lubricant to get the torque value.

Try now: Torquelator by Nord-Lock

Save the application to your mobile device:


  1. Tap the Share button on the menu bar
  2. Tap on Add to Home Screen
  3. Enter a name for the shortcut “Torquelator by Nord-Lock” then tap on Add in the upper-right corner to add to your home screen


  1. Tap the menu button of the browser and tap Add to homescreen
  2. Enter a name for the shortcut “Torquelator by Nord-Lock” and then it will be added to your home screen

X-series washers - torque guidelines

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