The NORD-LOCK GROUP is a global leader in engineering and bolting technologies manufacturing  Nord-Lock® wedge-locking washers, Superbolt™ mechanical tensioners, Boltight™ hydraulic tensioners and Expander® System pivot pins.

NORD-LOCK® created the original wedge-locking technology utilising tension instead of friction to secure bolted joints, even when exposed to severe vibration and dynamic loads.

NORD-LOCK® wedge-locking washers offer increased operational reliability and lower maintenance costs over the operational life cycle, while significantly reducing the risks of production stops, accidents and warranty claims. Due to the wedge created underneath the bolt head and nut, unintentional loosening of fasteners is prevented. Additional features and benefits of using NORD-LOCK® wedge-locking washers include:

- Offered in steel and stainless steel material 254 SMO® providing excellent corrosion resistance for use in any general saltwater application

- Available in different bolt sizes in Metric (M3 to M42) and Inch (#5 - 1 1/2”) systems

- Available in standard and SP outer diameters. SP Washers exhibiting the same wedge-locking design as original washers, but with an enlarged outer diameter. The SP washers are designed to be used together with flanged bolts and nuts (ISO 4161,4162) on oversized and slotted holes, or on sensitive surfaces and soft materials.

- Quick and easy to install and remove with hand tools

- Locking function not affected by lubrication

- High corrosion resistance. The washers have been tested with at least 1,000 hours in the Neutral Salt Spray Test (*), ensuring optimum performance over time, even in the most extreme environments.

- Reliable locking, even for joints with short clamp length

- Reusable (depending on usage environment)

- Testing & Certification. Rigorously tested (**) and approved by independent institutes as well as certification authorities.

Commonly sold in packs of specified number of washer pairs per pack. For additional information please refer to the supplied documentation or contact us.

(*) The Neutral Salt Spray Test (NSST according to ISO 9227) is one of the most established methods to verify corrosion resistance.

(**) Junker test, the most rigorous method for testing bolted joints. During the test, the joint is exposed to transverse movements underneath the bolt head and nut, while clamping force is continuously measured. Nord-Lock washers consistently outperform the competition in this challenging environment.