S-98687A110 5.5 mm ID x 10 mm OD DIN 126; ISO 7091 General Purpose Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The precise 10mm outer diameter effectively spreads pressure, reducing surface damage and extending component life in M5 screw assemblies.
• Superior Material Durability - Manufactured from high-grade steel with Rockwell B52 hardness, this washer resists deformation under stress for reliable, long-term performance.
• Guaranteed Fit & Function - The exact 5.5mm inner diameter ensures a perfect fit on M5 screws, preventing misalignment and ensuring smooth installation.
• International Standard Compliance - Conforms to DIN 126 and ISO 7091 specifications, guaranteeing interchangeability and quality for global engineering projects.
• Regulatory Safety Assurance - RoHS 3 and REACH compliant, making it safe for use in environmentally sensitive and regulated industries.
• Optimized Thickness for Versatility - With a thickness range of 0.8-1.2mm, it provides the ideal balance between spacing and clamping force for various applications.
• Metric System Precision - Designed in the metric system for seamless integration with other metric components, streamlining procurement and assembly processes.

Professional Applications & Engineering Value

This M5 flat washer is engineered to address critical challenges in industrial fastening, such as preventing bolt loosening from vibration and protecting surfaces from galling. The steel construction, combined with Rockwell B52 hardness, ensures it maintains its shape under high clamp loads, which is vital in machinery, automotive sub-assemblies, and electrical enclosures where reliability is non-negotiable. Its compliance with DIN 126 and ISO 7091 standards means it offers predictable performance and interchangeability, reducing downtime in maintenance and production lines. By using this metric washer, engineers can achieve consistent preload and enhance the structural integrity of their designs, making it a trusted component for precision applications worldwide.

Specification Summary & Compliance

This flat washer features an inner diameter of 5.5mm, outer diameter of 10mm, and thickness from 0.8 to 1.2mm, designed for M5 screw sizes. It meets DIN 126 and ISO 7091 dimensional and tolerance standards, ensuring high precision in manufacturing. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer applications without environmental or health concerns.