S-4340N111 3.2 mm ID x 6 mm OD DIN 6798 Countersunk Tight-Grip External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external teeth that bite into mating surfaces, preventing fastener loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in industrial environments
• Precise flush mounting with 90° countersunk design that sits perfectly flush with assembled components
• Optimized for M3 fasteners with exact 3.2mm ID and 6mm OD dimensions for perfect fit and consistent performance
• Exceptional durability from Rockwell C35 hardness, maintaining tooth integrity through repeated installation cycles
• Guaranteed dimensional accuracy through strict adherence to DIN 6798 manufacturing standards
• Environmentally compliant meeting RoHS 3 and REACH regulations for global industrial applications

Professional Applications & Engineering Value

These M3 external tooth lock washers deliver critical vibration-resistant fastening solutions for demanding industrial applications. The zinc-plated steel construction provides essential corrosion resistance while maintaining the mechanical strength needed for high-stress environments. The 90° countersunk design ensures flush mounting in precision assemblies, eliminating protrusions that could interfere with adjacent components. The external tooth configuration creates multiple biting points that dig into both the fastener and base material, effectively resisting rotational forces and vibration-induced loosening. Engineered to DIN 6798 standards, these washers offer reliable performance in automotive assemblies, machinery manufacturing, electrical enclosures, and precision equipment where vibration resistance and dimensional accuracy are paramount.

Specification Summary & Compliance

Manufactured to exact DIN 6798 specifications with metric dimensions: 3.2mm internal diameter, 6mm outer diameter, and 0.15-0.25mm thickness range. Features external tooth location and 90° countersink angle for precise flush mounting. Material hardness maintained at Rockwell C35 for optimal performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.