S-97725A275 5.2 mm ID x 9 mm OD Metal Sealing Washers

Key Features & Benefits at a Glance

• Lightweight corrosion resistance from aluminum material for extended service life in humid or chemical environments without rusting.
• Precise M5 screw compatibility with 5.2mm ID ensuring secure fit and even load distribution to prevent fastener loosening.
• Optimized 9mm OD design provides a broad bearing surface to protect materials from damage under clamping pressure.
• Consistent 0.8-1.2mm thickness range delivers reliable spacing and vibration dampening in repetitive assembly operations.
• Full RoHS 3 & REACH compliance guarantees safe use in regulated industries like electronics and automotive without hazardous substances.
• Metric system standardization ensures seamless integration with global machinery and equipment specifications.
• Cost-effective aluminum construction reduces overall assembly weight while maintaining durability for commercial applications.

Professional Applications & Engineering Value

These M5 metric aluminum flat washers address critical engineering challenges in industrial and commercial assemblies where weight reduction and corrosion resistance are paramount. The high-quality aluminum construction prevents galvanic corrosion when paired with non-ferrous fasteners, while the precise 5.2mm ID and 9mm OD dimensions ensure uniform stress distribution across joined surfaces. This flat washer design solves common issues like material embedment, bolt head marring, and vibrational loosening in machinery, electrical enclosures, and lightweight framing systems. The 0.8-1.2mm thickness provides consistent spacing for proper preload maintenance in M5 screw applications, making these washers ideal for production lines requiring repeatable, reliable performance.

Specification Summary & Compliance

This flat washer features metric dimensions with 5.2mm inner diameter, 9mm outer diameter, and 0.8-1.2mm thickness range, engineered for M5 screw size applications. Manufactured from aluminum material, it conforms to standard metric hardware specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.