S-91235A311 12.3 mm ID x 23.8 mm OD Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments
• Exceptional durability with 17-7 PH stainless steel construction maintaining Rockwell C38 hardness
• Precision fit for M12 screws with 12.3mm ID ensuring secure fastening alignment
• Optimized spring action from 2.7mm overall height provides consistent locking force
• Corrosion resistance suitable for demanding industrial applications
• Regulatory compliance meets RoHS 3 and REACH environmental standards
• Reliable performance in temperature variations and harsh operating conditions

Professional Applications & Engineering Value

This M12 spring lock washer delivers critical vibration-dampening performance for industrial machinery, automotive assemblies, and heavy equipment applications. The 17-7 PH stainless steel construction provides exceptional stress corrosion resistance while maintaining Rockwell C38 hardness under dynamic loads. Engineered with precise 12.3mm ID and 23.8mm OD dimensions, it ensures perfect alignment with M12 screws, preventing misalignment and distributing clamp load evenly. The spring lock design actively counters rotational forces and thermal cycling effects, making it ideal for applications where vibration resistance is critical to operational safety and equipment longevity. The combination of material properties and geometric precision addresses common failure points in bolted connections subjected to constant motion and environmental exposure.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 12.3mm internal diameter, 23.8mm outer diameter, and 1.8mm thickness with 2.7mm overall height. Manufactured from 17-7 PH stainless steel with Rockwell C38 hardness certification, it provides reliable mechanical properties for industrial fastening applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and chemical safety in industrial supply chains.