Nord-Lock original wedge-locking washers are advanced mechanical locking washers designed to secure bolted joints in the most demanding environments. These vibration-resistant lock washers use a unique wedge-locking technology that prevents bolt loosening caused by severe vibration and dynamic loads. When the bolt is tightened, the washer’s serrated surfaces embed into the mating components, while the cam angle (α) being greater than the thread pitch (β) creates a powerful wedge effect. This anti-vibration lock washer system ensures that any attempt to loosen the bolt increases the clamping force, rather than reducing it.

Nord-Lock washers are ideal for use in heavy machinery, oil and gas, railway, wind turbines, marine, and construction applications, where high-performance locking washers are critical for safety and reliability. These reusable lock washers maintain tension under extreme operational conditions and are proven to outperform conventional spring washers, nylock nuts, and other locking methods.

If you’re looking for self-locking washers that deliver consistent performance, prevent bolt failures, and are trusted worldwide, Nord-Lock wedge-locking washers are the preferred solution. These industrial lock washers are suitable for both standard and high-stress bolted assemblies and are available in various sizes and configurations, including pre-assembled washer pairs for quick and easy installation.