Nord-Lock Washers – Wedge Locking Technology
What Are Nord-Lock Washers?
Nord-Lock wedge-locking washers are a two-piece locking system designed to prevent bolted joints from loosening under vibration and dynamic loads.
Unlike traditional spring washers or nyloc nuts, Nord-Lock washers secure bolted assemblies using wedge-locking cam technology. The cam angle between the washer pair is greater than the bolt thread pitch, ensuring that any attempt at loosening increases clamp load rather than reduces it.
This makes Nord-Lock washers ideal for critical structural and high-vibration applications.
🔧 How Wedge-Locking Works
Each Nord-Lock washer set consists of two washers:
When tightened:
The radial teeth grip the joint surfaces
The cam faces lock together
Any loosening movement is counteracted by increased tension
This prevents spontaneous bolt loosening caused by vibration, shock loads or dynamic stress.
⭐ Why Choose Nord-Lock?
Proven wedge-locking technology
Prevents self-loosening under vibration
Maintains preload
Reusable
No special tools required
Suitable for structural & safety-critical joints
Available in a wide range of metric sizes
🏗 Typical Applications
Structural steel
Mining & heavy equipment
Transport & rail
Wind turbines
Marine & offshore
Oil & gas
Industrial machinery
Maintenance & repair
🔩 Available Types
Our Nord-Lock range includes: