Nord-Lock Washers

What is a Nord-Lock (Wedge Lock) Washer?

A wedge lock washer, widely recognized in the industry as a Nord-Lock® washer, is an advanced, high-performance fastener that utilizes tension rather than friction to secure bolted joints. The system is comprised of two distinct washers, each engineered with a specialized ridged surface (cams on one side, radial teeth on the other) that lock securely together. Manufactured from premium, industrial-grade materials—including highly durable zinc and stainless steel—these innovative fasteners provide an impenetrable, vibration-resistant seal that drastically increases the safe, low-maintenance operational lifespan of your heavy equipment.

Mechanical Advantages and Industrial Applications

Because they rely on a mechanical tension-locking design, Nord-Lock washers offer several critical advantages over traditional friction-based lock washers for dynamic, high-stress assemblies:

• Tension-Based Locking: Once tightened, the unique ridged surfaces physically wedge together. This creates a secure mechanical lock that actually requires 40-60% more tension to loosen than it took to initially tighten, making accidental backing out virtually impossible.
• Heavy-Duty Applications: They are the absolute industry standard for high-wear, high-vibration, and extreme load-bearing applications, frequently utilized in massive motors, industrial engines, turbines, vibrators, and heavy aggregators.
• Versatile Fastening: The wedge lock system is highly adaptable and engineered to perform flawlessly when used in conjunction with standard tapped holes, deep counterbores, through holes, and heavy-duty stud bolts.
• Custom Manufacturing: Backed by over 25 years of experience, we offer standard and fully custom sizes ranging from short runs to full production runs. We also provide custom chamfering, specialized plating, and advanced custom coatings to meet your exact environmental requirements.

Request a Quote Today

Have a question about our manufactured Nord-Lock washers or need help selecting the perfect custom coating for your high-vibration turbine assembly? Contact our team by using our secure online form to submit your project details. You can also give us a call today to speak directly with our bolt specialists, whose expertise will ensure your fasteners perform at or above requirements. We look forward to speaking with you!