Lock Washers

Lock Washers – Vibration-Resistant Fastening Solutions

When fastener security is critical, lock washers provide dependable protection against loosening caused by vibration, torque fluctuations, and thermal expansion. Designed to create mechanical locking action, these essential fastening components improve joint stability and maintain clamp load in demanding industrial environments. From automotive assemblies to aerospace systems, lock washers are trusted for superior performance and long-term reliability.

Types of Lock Washers for Every Application

Split Lock Washers

Also known as helical spring washers, split lock washers apply continuous spring tension that helps resist rotational loosening in dynamic assemblies.

Internal & External Tooth Lock Washers

Toothed lock washers bite into the fastener and mating surface, creating enhanced grip and electrical grounding capability—ideal for electronics and panel applications.

Wedge & Serrated Lock Washers

Engineered for high-vibration environments, wedge and serrated washers provide advanced anti-rotation performance for structural and heavy-duty equipment.

Material Options & Protective Finishes

Lock washers are available in carbon steel, alloy steel, 18-8 stainless steel, 316 stainless steel, and brass for specialty applications. Finish options include plain, zinc-plated (Clear Cr3 or Yellow Cr6), hot-dip galvanized, and phosphate & oil coatings for corrosion resistance and environmental durability.

Standards & Performance

Manufactured to meet ASME B18.21.1, DIN 127, DIN 6798, and applicable MIL-specifications, lock washers are produced with precise dimensional tolerances for proper seating and clamp force retention. Hardened options are available for use with Grade 5, Grade 8, and metric 10.9 or higher-strength fasteners.

Common Applications

• Automotive and truck assemblies

• Structural steel and heavy machinery

• Appliances and electrical enclosures

• Aerospace and defense systems

For fastening systems where staying tight is non-negotiable, lock washers deliver proven vibration resistance and reliable mechanical security across countless industries.