S-98449A525 0.168" ID x 0.34" 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-lasting performance in harsh environments
• Optimized mechanical strength with Rockwell C34 hardness providing reliable spring tension and fatigue resistance
• Precision dimensional fit with 0.168" ID specifically engineered for No. 8 screws to ensure proper installation and function
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
• Reliable torque retention through controlled thickness (0.018-0.023") maintaining consistent locking force throughout service life

Professional Applications & Engineering Value

This internal tooth lock washer delivers critical vibration-resistant fastening solutions for demanding industrial applications where secure connections are paramount. Engineered from 400 Series Stainless Steel, it provides excellent corrosion resistance while maintaining the necessary spring properties for reliable locking action. The internal tooth configuration concentrates biting force directly under the screw head, creating superior resistance to rotational loosening in high-vibration environments such as machinery, automotive assemblies, and electrical enclosures. With precise dimensions (0.168" ID, 0.34" OD) specifically matched to No. 8 screw size, this washer ensures proper fit and maximum surface contact for optimal performance in critical fastening joints where safety and reliability cannot be compromised.

Specification Summary & Compliance

This internal tooth lock washer features precise dimensional specifications including 0.168" internal diameter, 0.34" outer diameter, and controlled thickness range of 0.018-0.023". 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 includes 400 Series Stainless Steel with verified Rockwell C34 hardness for consistent mechanical properties and reliable performance.