S-97985A116 31 mm ID x 48 mm OD DIN 6797 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external tooth design that bites into mating surfaces, preventing loosening under dynamic loads
• Enhanced joint integrity with precisely engineered 31mm internal diameter ensuring perfect fit for M30 fasteners
• Durable corrosion protection from zinc-plated steel construction, extending service life in harsh industrial environments
• Consistent locking performance maintained by Rockwell C35 hardness, resisting deformation under high clamping forces
• Reliable standardization through DIN 6797 compliance, ensuring interchangeability and predictable performance
• Environmental compliance assurance with RoHS 3 and REACH adherence, meeting global regulatory requirements
• Optimized load distribution with 48mm external diameter, reducing surface pressure and material stress

Professional Applications & Engineering Value

This M30 external tooth lock washer delivers critical vibration resistance in demanding applications where joint security is paramount. The zinc-plated steel construction provides essential corrosion protection while maintaining the Rockwell C35 hardness needed to prevent tooth deformation under heavy loads. Engineered to DIN 6797 standards, these washers feature external teeth that create positive locking action by embedding into both the fastener and workpiece surfaces. This design solves common industrial challenges in machinery, automotive assemblies, and structural applications where vibration-induced loosening can lead to equipment failure. The metric dimensions (31mm ID, 48mm OD) ensure precise compatibility with M30 fasteners while the tooth configuration maintains consistent performance across temperature variations and dynamic loading conditions.

Specification Summary & Compliance

This external tooth lock washer features precise dimensional specifications with 31mm internal diameter, 48mm external diameter, and 1.4-1.8mm thickness. Manufactured to DIN 6797 standards with external tooth location, it ensures reliable performance in metric fastener systems. The washer maintains Rockwell C35 hardness for consistent locking force and meets comprehensive compliance requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and industrial suitability.