The Nord-Lock Group is focused on solving the toughest bolting challenges. From the deepest mines to the tops of the world’s tallest buildings, and countless applications in between, Nord-Lock bolting solutions safeguard people’s lives and customers’ investments around the globe.

The Group offering includes multifunctional wedge-locking technology, wedge-locking technology, Superbolt tensioners, and Expansion bolts as well as experienced bolting experts at your service.

Nord-Lock wedge-locking technology

Nord-Lock wedge-locking products are recognized around the world for their ability to secure bolted joints exposed to severe vibration and dynamic loads. The system comprises of a pair of lock washers that has cams on one side with a rise greater than the pitch of the bolt, and radial teeth on the opposite side. The principle utilizes tension and the system cannot loosen unintentionally as it creates a wedge underneath the bolt head/nut.

Nord-Lock washers maintain high clamp loads, are quick and easy to install and remove, and are reusable. Nord-Lock product range also offers wheel nuts, combi bolts and custom solutions that are based on the same wedge-locking principle.

Nord-Lock multifunctional wedge-locking technology

The recently launched X-series is the world’s first multifunctional washer. The solution combines Nord-Lock’s unmatched wedge-locking protection against spontaneous bolt loosening with an elastic reserve to compensate for the loss of preload due to settlement and relaxation.

The X-series technology provides bolt security independent of the critical loosening factor. This solution is ideal for applications that incorporate painted surfaces, soft metals, composites, multiple clamped parts, gasket joints, short clamp length, and more. Simplifying the design with a single solution and rationalizing the number and type of securing components are just a few out of many benefits.

Nut or bolt style multi-jackbolt tensioners

Superbolt multi-jackbolt tensioners are very useful for tightening nuts greater than 1in in diameter and are designed as direct replacements for conventional bolted joints. Instead of having to generate enough torque to tighten an entire hex nut, MJT’s break the torque requirement down by utilizing a series of jackbolts threaded through the body of a round tensioner. Tightening the jackbolts enables the user to generate the needed clamping load while using only hand or air tools for installation and removal.

Customers experience dramatic time-savings compared to other bolting methods. Since only hand tools are used, worker safety is greatly increased, and common injuries associated with bolting methods are eliminated.

Expansion bolting

Utilizing Superbolt technology, Nord-Lock is able to offer tremendous radial expansion and joint clamping power in one bolting system. The Expansion bolts replace traditional interference or force fit bolts. Radial expansion is critical for rotating couplings or alignment systems that require the bolts to be able to transfer forces in shear.

The key to this technology is the split expansion sleeve that mates with the customer’s machined holes. The split sleeve requires less tolerance on mating parts than is traditionally required with interference fit or hydraulic systems, saving critical machining time.

Continuous innovation and know-how

Our experienced engineers are always ready to help you realize safe and efficient bolting. Nord-Lock has decades of documented success in every major industry including oil & gas, energy, railway and mining. We are able to meet your needs quickly and according to the highest standards – our certifications and independent approvals include: AbP, ABS, DIBt, DNV and TÜV.

We have in-house R&D and Project Engineering, and our global teams are able to provide in-depth education and support, according to your needs. Nord-Lock works with external testing facilities and standardization organizations, as well as authorized distributors, on a local, regional and international level.

All of this adds up to a company you can trust to find the right solution for your bolting needs.

Let us help with your bolting challenge? Contact us on 01980 847129 or email us or our website