S-98438A230 0.195" ID x 0.41" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance from 400 Series Stainless Steel construction, ideal for harsh industrial environments
• Optimized hardness (Rockwell C34) provides durable spring action while resisting deformation under pressure
• Precise dimensional compatibility with 0.195" ID and 0.41" OD ensuring perfect fit for No. 10 screw applications
• Industry-standard compliance with ASME B18.21.1 specifications guarantees consistent performance and interchangeability
• Environmental regulation adherence through RoHS 3 and REACH compliance for global supply chain compatibility
• Reliable locking performance through external tooth design that maintains secure fastening in high-vibration applications

Professional Applications & Engineering Value

This external tooth lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. Engineered from 400 Series Stainless Steel, it provides excellent corrosion resistance for machinery operating in humid, chemical, or outdoor environments. The external tooth configuration creates multiple biting points that dig into both the fastener head and base material, effectively preventing rotational loosening caused by machinery vibrations, thermal cycling, or dynamic loads. With its specific design for No. 10 screw size applications, this washer solves common engineering challenges in assembly lines, heavy equipment, automotive components, and electrical enclosures where reliable locking action is essential for operational safety and reduced maintenance intervals. The combination of material strength and tooth geometry ensures consistent performance across temperature variations and mechanical stress cycles.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications with 0.195" inner diameter, 0.41" outer diameter, and thickness ranging 0.018-0.024". Manufactured to ASME B18.21.1 standards for inch system washers, it ensures dimensional accuracy and performance reliability. The component is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements (updated 06/14/2023, 235 SVHC), making it suitable for global industrial applications with strict environmental and safety standards.