Nord-Lock®

Secure your critical bolted connections with Nord-Lock® wedge-locking technology—engineered to eliminate dynamic self-loosening under extreme vibration.

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Maximum Security and Joint Integrity for Critical Bolted Connections

Industry-leading wedge-locking solutions from Nord-Lock®, designed to keep high-stress bolted joints safe, reliable, and maintenance-free. Unlike traditional locking elements that rely on friction, Nord-Lock® utilizes a patented tension-based wedge effect: washer pairs feature internal cam faces with an angle greater than the bolt thread pitch, combined with radial teeth on the outer sides that bite into the mating surface. When subjected to severe vibration or dynamic shock, any tendency for the bolt to turn actually increases clamp force, locking the assembly firmly in place.

Key Benefits of Nord-Lock®

Unmatched Vibration Resistance

Uses tension instead of friction to prevent self-loosening, maintaining joint integrity even under extreme dynamic vibration and heavy shock loads.

Maintains Clamp Force

The cam geometry ensures that any slight micro-rotation increases pre-load force rather than decreasing it, preventing joint failure.

Simple Assembly and Disassembly

Installs and removes easily using standard tools—no specialized machinery, chemical thread-lockers, or secondary manual locking methods required.

Reusable and Surface-Friendly

Retains full locking function over multiple assembly cycles without causing critical damage to mating surfaces, coatings, or painted parts.

Broad Environmental Resistance

Available in high-grade carbon steel, stainless steel, and nickel-base alloys to operate reliably in high-temperature, corrosive, or marine environments.

Optimized for High-Strength Fasteners

Standardized and tested for maximum performance up to bolt property class 12.9, accommodating both lubricated and non-lubricated joints.

Product Types

Original Wedge-Locking Washers

The core wedge-locking washer pair available in zinc-flake coated steel and stainless steel. Available in standard outer diameters or enlarged outer diameters (SP) to distribute load over painted surfaces, soft substrates, or enlarged/slotted holes.

X-Series Washers (Multifunctional Wedge-Locking)

Features an integrated conical spring mechanism combined with wedge-locking geometry to simultaneously prevent vibration-induced loosening and compensate for preload loss caused by settlement and material relaxation.

Stainless Steel & Specialty Alloy Washers (NLss / 254 SMO®)

Engineered specifically for harsh chemical, offshore, saltwater, and sanitary processing applications where maximum corrosion resistance is mandatory.

Steel Construction Washers (SC-Washers)

Specially designed for structural steelwork to fit standard HV and HR bolt/nut sets, ensuring full compliance with architectural and infrastructure safety standards.

Wheel Nuts & Combi Nuts

All-in-one fastener solutions—including specialized wheel nuts for commercial vehicles and heavy machinery—that simplify assembly, eliminate human installation errors, and safeguard against wheel detachment.