S-91120A180 8.4 mm ID x 15 mm OD DIN 6798 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
• Reliable locking performance ensured by precision-engineered teeth that maintain secure fastening in high-stress applications
• Excellent corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise dimensional compatibility with M8 screws (8.4mm ID, 15mm OD) for seamless integration into metric assemblies
• Certified quality assurance through DIN 6798 compliance, guaranteeing consistent manufacturing standards
• Environmental regulation compliance with RoHS 3 and REACH, meeting strict international safety requirements
• Optimized thickness range (0.7-0.9mm) providing ideal spring tension while maintaining material durability

Professional Applications & Engineering Value

These M8 external tooth lock washers deliver critical vibration-resistant fastening solutions for demanding industrial applications. Manufactured from 18-8 stainless steel, they provide exceptional corrosion resistance in environments exposed to moisture, chemicals, or temperature variations. The external tooth configuration creates multiple biting points that dig into both the bearing surface and fastener head, effectively resisting rotational loosening caused by machinery vibration, impact loads, or thermal cycling. This design is particularly valuable in assembly lines, automotive components, electrical enclosures, and heavy machinery where fastener security is paramount. The DIN 6798 certification ensures dimensional precision and consistent performance across production batches, while the metric sizing (8.4mm ID, 15mm OD) guarantees proper fit with standard M8 fasteners.

Specification Summary & Compliance

This external tooth lock washer features precise dimensions of 8.4mm internal diameter, 15mm outer diameter, and 0.7-0.9mm thickness range, engineered specifically for M8 screw applications. Manufactured in compliance with DIN 6798 standards for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations regarding chemical safety. Constructed from 18-8 stainless steel for consistent material properties and reliable performance in industrial fastening systems.