S-91455A110 5.3 mm ID x 10 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments
• Optimal load distribution across M5 fastener assemblies, preventing surface damage and joint failure
• Enhanced vibration resistance through precise flat surface design, maintaining bolt tension in dynamic applications
• Consistent dimensional accuracy with 5.3mm ID/10mm OD specifications, ensuring perfect fit with M5 screws
• Exceptional mechanical strength from Rockwell B91 hardness rating, providing reliable performance under pressure
• Global compliance assurance meeting DIN 125 and ISO 7089 standards for international project compatibility
• Environmental responsibility through RoHS 3 and REACH compliance, supporting sustainable manufacturing initiatives

Professional Applications & Engineering Value

This M5 zinc plated steel flat washer delivers critical engineering solutions for industrial assembly challenges. The zinc plating creates a protective barrier against oxidation and chemical exposure, significantly extending component lifespan in manufacturing equipment, automotive assemblies, and outdoor structures. Its precise metric dimensions (5.3mm ID, 10mm OD) ensure perfect alignment with M5 fasteners, eliminating play and reducing stress concentration points. The Rockwell B91 hardness provides the ideal balance between durability and flexibility, preventing deformation under heavy loads while maintaining sealing integrity. Engineered to DIN 125 and ISO 7089 standards, these flat washers offer reliable performance in vibration-prone applications, from machinery mounts to electrical enclosures, where consistent clamping force is essential for operational safety and maintenance reduction.

Specification Summary & Compliance

This metric flat washer features precise dimensional tolerances with 5.3mm inner diameter, 10mm outer diameter, and 0.9-1.1mm thickness range, engineered for perfect compatibility with M5 fasteners. Manufacturing strictly adheres to DIN 125 and ISO 7089 specifications, ensuring consistent quality and performance. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits. Constructed from zinc plated steel with Rockwell B91 hardness rating, these washers deliver reliable mechanical properties for industrial fastening applications requiring corrosion resistance and dimensional stability.