S-90412A150 8.4 mm ID x 15 mm OD DIN 6797 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Excellent corrosion resistance from 316 stainless steel construction, ideal for harsh industrial environments
• Precise dimensional compatibility with M8 fasteners (8.4mm ID, 15mm OD) ensuring perfect fit and optimal performance
• Reliable locking performance meeting DIN 6797 specifications for consistent quality and engineering reliability
• Enhanced durability with 0.7-0.9mm thickness providing optimal spring tension without compromising material integrity
• Environmental compliance with RoHS 3 and REACH regulations, ensuring safe use across regulated industries
• Reduced maintenance requirements through permanent locking action that maintains fastener security over time

Professional Applications & Engineering Value

These M8 external tooth lock washers deliver critical vibration resistance in demanding applications where fastener security is paramount. The 316 stainless steel construction provides exceptional corrosion resistance, making them ideal for chemical processing, marine environments, and food industry applications where moisture and corrosive elements are present. The external tooth design creates multiple biting points that dig into both the fastener and workpiece, distributing locking force evenly to prevent rotational loosening. This DIN 6797 compliant design ensures consistent performance in high-vibration machinery, automotive assemblies, and electrical enclosures where thermal cycling and mechanical stress challenge conventional fastening solutions. The precise metric dimensions (8.4x15mm) guarantee proper seating and maximum contact area for reliable locking action throughout the product lifecycle.

Specification Summary & Compliance

Manufactured to DIN 6797 standards with precise dimensional tolerances for M8 fastener applications. Features 8.4mm internal diameter, 15mm external diameter, and 0.7-0.9mm thickness range. Constructed from 316 stainless steel for optimal corrosion resistance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC requirements. External tooth configuration provides maximum locking effectiveness while maintaining material integrity under repeated loading cycles.