S-93925A430 25 mm ID x 38 mm OD DIN 6797 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces, preventing fastener loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in demanding industrial environments
• Precise dimensional accuracy with 25mm ID and 38mm OD ensuring perfect fit for M24 fasteners and uniform load distribution
• Exceptional mechanical strength from Rockwell C42 hardened steel, maintaining tooth integrity under high clamping forces
• Reliable standardization compliant with DIN 6797 specifications, guaranteeing consistent performance and interchangeability
• Environmental compliance meeting RoHS 3 and REACH regulations, making them suitable for global industrial applications
• Optimized thickness range of 1.3-1.6mm providing ideal spring tension while accommodating surface variations

Professional Applications & Engineering Value

This M24 internal tooth lock washer delivers critical vibration resistance in high-stress mechanical assemblies where joint integrity is paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, automotive components, and industrial machinery exposed to harsh environments. Engineered to DIN 6797 standards, these washers feature precisely positioned internal teeth that create multiple biting points, effectively preventing rotational loosening caused by vibration and thermal cycling. The Rockwell C42 hardness ensures teeth maintain their gripping capability without deformation, even under repeated loading cycles. Ideal for heavy-duty applications including construction equipment, power transmission systems, and manufacturing machinery, these metric lock washers solve the persistent challenge of maintaining bolt preload in dynamic operating conditions.

Specification Summary & Compliance

Manufactured to DIN 6797 specifications with internal tooth configuration, this washer features precise dimensional tolerances with 25mm internal diameter, 38mm outer diameter, and 1.3-1.6mm thickness range. The zinc-plated steel construction achieves Rockwell C42 hardness for optimal mechanical performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial fastener applications.