S-98449A032 0.448" ID x 0.789" 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 fastener loosening
• Exceptional corrosion resistance with 400 Series Stainless Steel construction for long-lasting performance in harsh environments
• Precise dimensional accuracy with 0.448" ID and 0.789" OD ensuring perfect fit for 7/16" screw applications
• Enhanced durability with Rockwell C34 hardness providing reliable performance under heavy loads
• Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental responsibility with full RoHS 3 and REACH compliance for safe use in regulated industries
• Optimized thickness range (0.032-0.040") providing consistent performance while accommodating manufacturing tolerances

Professional Applications & Engineering Value

This 400 Series Stainless Steel tooth lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The internal tooth location design creates multiple biting points that dig into both the fastener and mounting surface, effectively preventing rotation and loosening under continuous vibration and dynamic loads. Engineered specifically for 7/16" screw sizes, this heavy-duty component maintains its locking capability through repeated stress cycles, making it ideal for machinery, automotive assemblies, electrical enclosures, and structural frameworks. The combination of stainless steel material and precision manufacturing ensures reliable performance in corrosive environments while the controlled hardness (Rockwell C34) balances strength with flexibility to prevent surface damage to connected components.

Specification Summary & Compliance

This precision tooth lock washer features dimensional specifications of 0.448" internal diameter, 0.789" outer diameter, and thickness ranging from 0.032" to 0.040". Manufactured to meet 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.