S-90391A122 50 mm ID x 74 mm OD DIN 5406 Spring Lock Washers for Slotted Bearing Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through conical spring design that maintains constant tension under dynamic loads
• Enhanced locking security with external tooth configuration that bites into mating surfaces for reliable fastening
• Precision DIN 5406 compliance ensures consistent performance and interchangeability in industrial applications
• Optimized for M50 screw systems with 50mm ID and chamfered nut compatibility per DIN 981 standards
• Durable steel construction provides long-term reliability in demanding environments
• Environmental compliance assurance with RoHS 3 and REACH certification for global industrial safety standards
• Space-efficient design with 4.5mm overall height maintains system compactness without compromising performance

Professional Applications & Engineering Value

This M50 spring lock washer delivers critical vibration-resistant fastening solutions for heavy-duty industrial equipment, machinery assemblies, and structural applications where dynamic loads threaten joint integrity. The conical spring design creates continuous axial pressure that compensates for material relaxation and thermal cycling, while the external tooth configuration aggressively engages both bearing surfaces to prevent rotational loosening. Manufactured from high-grade steel and engineered to DIN 5406 standards, this metric washer provides reliable performance in automotive, construction, and manufacturing sectors where M50 screw systems require secure, maintenance-free fastening. The combination of precise dimensional control and specialized tooth geometry addresses common failure points in high-vibration environments, extending equipment service life and reducing maintenance interventions.

Specification Summary & Compliance

This spring lock washer features precise metric dimensions including 50mm inner diameter, 74mm outer diameter, and 1.250mm thickness with DIN 5406 standard compliance for dimensional accuracy and performance consistency. The external tooth conical design provides optimal locking action compatible with DIN 981 chamfered nut specifications. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial markets while meeting stringent European fastener standards.