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Nord-Lock X-series – bolt security without compromise

Nord-Lock adds a new dimension of safety to bolt security with the launch of the Nord-Lock X-series washer. X-series combines Nord-Lock’s unmatched wedge-locking protection against spontaneous bolt loosening due to vibration and dynamic loads with an exclusive spring effect to protect against slackening due to settlement and relaxation. This unique combination makes X-series the first, true multifunctional solution — offering the highest security for critical joints, without compromise.

As with Nord-Lock’s original washers, each washer pair has cams on one side and radial teeth on the opposite side to secure the bolted joint with tension instead of friction. The Nord-Lock X-series washers’ conical shape also creates an elastic reserve in the bolted joint to compensate for the loss of preload and prevent slackening. For a full video report on how X-series washers add a new dimension of safety to bolt security go to

“Since we work closely with our customers we can react to the trends in application design, and this product is the result of our goal to design a system that would eliminate insecurity. When you cannot say with certainty whether spontaneous bolt loosening or slackening would be the bigger issue or when both could be equal risks, there is now a solution on the market” explains Maxime Thonnerieux, Development Director of the new product. “Beyond vibration and dynamic loads, Nord-Lock X-series allows us to serve customers with a multitude of other challenging application areas, such as painted or powder-coated surfaces, soft metals, composites and polymers. The Nord-Lock X-series offers exciting new possibilities for application design.”

The product was officially released during a live broadcast at the InnoTrans exhibition in Berlin:

At the launch seminar, Pierre Ract, Export Area Manager at Poma participated and informed how the new product could benefit critical applications.

Download the full press release here:
Nord-Lock X-series official press release – September 2012

For more information about how Nord-Lock X-series works, contact Nord-Lock at +46 31 7192 300 or visit

Media Contact
Ewa Sewerynek
Tel: +46 (0)31 7192 313