S-97527A007 0.256" ID x 0.698" OD Internal-Tooth Lock Washers for Soft Material

Key Features & Benefits at a Glance

• Superior vibration resistance with internal tooth design that bites into mating surfaces to prevent fastener loosening
• Enhanced corrosion protection through zinc-plated steel construction for extended service life in demanding environments
• Exceptional hardness rating of Rockwell C44 ensures teeth maintain gripping power under repeated stress cycles
• Precision dimensional control with 0.256" ID and 0.698" OD for perfect fit with 1/4" fasteners
• Consistent performance maintained through controlled thickness range of 0.048-0.052"
• Regulatory compliance assurance with RoHS 3 and REACH adherence for global industrial applications
• Optimized internal tooth placement provides maximum contact area while minimizing surface marring

Professional Applications & Engineering Value

This 1/4" tooth lock washer delivers critical vibration-damping performance for industrial assemblies subject to dynamic loads and mechanical shocks. The internal tooth configuration creates multiple biting points that dig into both the fastener head and base material, creating a mechanical lock that resists rotational forces far more effectively than standard flat washers. The zinc-plated steel construction provides sacrificial corrosion protection while maintaining the Rockwell C44 hardness necessary for the teeth to penetrate hardened surfaces without deformation. Engineered specifically for high-vibration applications in machinery, automotive, and heavy equipment, this washer solves the persistent problem of fastener loosening that can lead to equipment failure, maintenance downtime, and safety hazards in demanding industrial environments.

Specification Summary & Compliance

Manufactured to inch system standards with precise internal diameter of 0.256" and external diameter of 0.698" for compatibility with 1/4" fasteners. The controlled thickness range of 0.048-0.052" ensures consistent performance across production batches. This internal tooth lock washer meets industry standards for dimensional accuracy and mechanical properties, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and material safety in global industrial supply chains.