S-98449A030 0.32" ID x 0.61" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion resistance with 400 Series Stainless Steel construction for long-term reliability in harsh industrial environments
• Optimal hardness performance with Rockwell C34 rating ensuring teeth maintain gripping power without deforming under pressure
• Precise dimensional compatibility with 5/16" fasteners, featuring 0.32" ID and 0.61" OD for perfect fit and maximum contact area
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Enhanced safety and durability with controlled thickness (0.028-0.034") providing reliable spring action and consistent locking force
• Environmental regulation compliance with RoHS 3 and REACH adherence for global manufacturing applications

Professional Applications & Engineering Value

These 400 Series Stainless Steel tooth lock washers deliver critical vibration-resistant fastening solutions for demanding industrial applications. The internal tooth location design ensures maximum biting action into both the fastener and workpiece, creating a mechanical lock that prevents rotational loosening in high-vibration environments such as heavy machinery, automotive assemblies, and industrial equipment. The stainless steel construction provides excellent corrosion resistance while maintaining the necessary spring properties for reliable locking performance. Engineered to ASME B18.21.1 standards, these washers offer predictable performance and interchangeability, reducing installation time and maintenance costs. The combination of Rockwell C34 hardness and precise dimensional control ensures consistent performance in critical joints where vibration-induced failure is not an option.

Specification Summary & Compliance

This heavy-duty tooth lock washer features precise dimensions with 0.32" internal diameter, 0.61" outer diameter, and thickness ranging 0.028-0.034". Manufactured to ASME B18.21.1 specifications for tooth lock washers, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for industrial components. The internal tooth configuration provides optimal locking action for 5/16" fasteners in various industrial and mechanical applications.