S-90394A116 10.5 mm ID x 21 mm OD DIN 137B Wave Spring Lock Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from bronze construction ensures long-lasting performance in harsh or humid environments
• Reliable spring tension maintenance through wave design prevents loosening from vibration and thermal cycling in M10 assemblies
• Precision dimensional compliance with DIN 137B standard guarantees perfect fit and consistent performance in metric applications
• Optimal load distribution with 10.5mm ID and 21mm OD dimensions provides stable bearing surface while minimizing stress concentration
• Environmental regulation compliance with RoHS 3 and REACH ensures safe use across regulated industries and international markets
• Consistent 1mm thickness delivers predictable deflection characteristics for accurate spring force calculations
• Durable bronze material offers excellent fatigue resistance for repeated compression cycles in dynamic applications

Professional Applications & Engineering Value

This M10 bronze wave washer delivers critical engineering solutions where vibration resistance and corrosion protection are paramount. The bronze material inherently resists galvanic corrosion when paired with dissimilar metals, making it ideal for marine, chemical processing, and outdoor equipment applications. The wave spring design according to DIN 137B provides consistent axial force to maintain bolt preload in vibrating machinery, automotive assemblies, and electrical enclosures. Unlike flat washers, this wave washer compensates for thermal expansion and material relaxation in M10 screw applications, preventing joint failure and reducing maintenance frequency. The metric dimensions ensure seamless integration with European machinery and global engineering standards.

Specification Summary & Compliance

This wave washer features precise metric dimensions: 10.5mm inner diameter, 21mm outer diameter, and 1mm thickness with 4.2mm overall height. Manufactured to DIN 137B specifications for dimensional accuracy and performance consistency. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (updated 06/14/2023, 235 SVHC), meeting the latest environmental regulations for hazardous substance restrictions. Designed specifically for M10 screw size applications with bronze material providing excellent mechanical properties for spring washer functionality.