S-90895A027 0.209" ID x 0.354" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through spring lock design prevents fastener loosening in high-stress applications
• Enhanced gripping power with dual-sided serrations (top and bottom) creates maximum surface contact and prevents rotation
• Excellent corrosion resistance from 18-8 stainless steel construction ensures long-term reliability in harsh environments
• Dual measurement compatibility works with both No. 10 (inch) and M5 (metric) screw sizes for versatile applications
• Optimized mechanical strength with Rockwell C38 hardness provides durable performance under repeated loading
• Precision dimensional control with 0.209" ID and 0.354" OD ensures proper fit and consistent performance
• Full regulatory compliance with RoHS 3 and REACH standards meets international environmental and safety requirements

Professional Applications & Engineering Value

This spring lock washer delivers exceptional engineering value in demanding industrial environments where vibration-induced fastener failure is a critical concern. The 18-8 stainless steel construction provides inherent corrosion resistance, making it ideal for outdoor equipment, marine applications, and chemical processing facilities. The dual serration design (top and bottom) creates multiple biting edges that dig into both the fastener and mounting surface, effectively preventing rotational movement and maintaining clamp load integrity. This vibration-resistant washer is specifically engineered for machinery, automotive assemblies, and electrical enclosures where consistent performance under dynamic loads is essential. The compatibility with both No. 10 and M5 screw sizes offers installation flexibility across international equipment standards and maintenance protocols.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 0.209" internal diameter, 0.354" outer diameter, and 0.024" thickness with overall height of 0.043". The component maintains Rockwell C38 hardness for optimal mechanical performance and meets industry-standard manufacturing tolerances. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global industrial applications. The dual measurement system accommodates both inch (No. 10) and metric (M5) fastener standards.