S-98449A034 0.576" ID x 0.985" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance from 400 Series Stainless Steel construction for long-lasting performance in harsh environments
• Optimized locking force with Rockwell C34 hardness providing durable spring action without compromising material integrity
• Precise dimensional compatibility with 0.576" ID and 0.985" OD ensuring perfect fit for 9/16" fasteners
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing reliable performance in critical applications
• Environmental responsibility through RoHS 3 and REACH compliance for safe use in regulated industries
• Consistent thickness control (0.037-0.045") for uniform clamping force and reliable assembly performance

Professional Applications & Engineering Value

This 9/16" internal tooth lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. Engineered from 400 Series Stainless Steel, it provides excellent corrosion resistance while maintaining the mechanical properties needed for heavy-duty service. The internal tooth configuration creates multiple biting points that dig into both the fastener and workpiece, distributing locking force evenly to prevent rotational loosening caused by machinery vibration, thermal cycling, or dynamic loads. This design is particularly valuable in automotive assemblies, industrial machinery, electrical enclosures, and construction equipment where vibration-resistant washers must maintain bolt preload integrity over extended service periods. The combination of material strength, precise dimensional control, and standardized compliance makes this component an engineering solution for preventing costly downtime due to fastener failure.

Specification Summary & Compliance

This tooth lock washer features precise inch dimensions with 0.576" internal diameter, 0.985" outer diameter, and controlled thickness between 0.037-0.045". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance requirements. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide. Material certification confirms 400 Series Stainless Steel composition with Rockwell C34 hardness specification maintained throughout production.