Nord-Lock Washers are based on leading wedge- locking technology and are recognized for their ability to safely secure bolted joints exposed to severe vibration and dynamic loads. Nord-Lock washers secure bolted joints with tension instead of friction. The system is comprised of a pair of washers with cams on one side and radial teeth on the opposite side. Since the cam angle ‘α’ is greater than the thread pitch ‘β’ a wedge effect is created by the cams, preventing the bolt from rotating loose. 

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Nord-Lock washers provide more than just a safe locking function, and using Nord-Lock washers also improves the general performance of a bolted joint.

Product benefits are as under: -

• Maintains high clamp load and thereby ensures the function of the joint

• Quick and easy to install and remove with standard tools

• Locking function not affected by lubrication

• De ned and uniform friction conditions which result in a more accurate preload

• Same temperature characteristics as standard bolt / nut

• Reusable – in addition, Nord-Lock washers do not affect the reusability of fasteners

• The washers are hardened and can support and distribute great loads

• Washers with enlarged outer diameter available for  anged bolts / nuts

• High corrosion resistance

• Can be used with fasteners up to grade 12.9 (ASTM A574)

• Reliable locking, even for joints with short clamp length

• Secures fasteners at both high and low preloads

• No retightening needed

• Veriable locking function

• Elegant solution and problem solving – modern engineering

 

Nord-Lock offers more than just secure bolted joints. When designing an application, it is important to consider the result it will generate throughout the entire lifespan. Over the operational life cycle, Nord-Lock wedge lock washers give increased operational reliability and lower maintenance costs while significantly reducing the risks of production stops, accidents and warranty claims.