S-91860A078 8.4 mm ID x 22 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 17-7 PH Stainless Steel ensures long-term reliability in harsh industrial environments, reducing replacement frequency and maintenance costs.
• Exceptional hardness (Rockwell C40) provides excellent wear resistance and maintains dimensional stability under high load and vibration conditions.
• Precise DIN 9021 dimensional compliance guarantees perfect fit and uniform load distribution for M8 screws, preventing loosening and joint failure.
• Optimized metric sizing (8.4mm ID x 22mm OD) ensures easy installation and effective surface coverage, protecting components from damage and abrasion.
• RoHS 3 and REACH compliance assures environmental safety and regulatory adherence for global industrial supply chains and sensitive applications.
• High-strength material properties offer reliable performance in demanding applications, from heavy machinery to precision assemblies, without compromising integrity.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these M8 flat washers made from 17-7 PH Stainless Steel address critical challenges like corrosion, vibration-induced loosening, and surface damage. The DIN 9021 standard ensures precise dimensional accuracy, enabling uniform pressure distribution and secure fastening in M8 screw assemblies. With a Rockwell C40 hardness, they withstand repetitive stress and harsh conditions—ideal for machinery, automotive, and structural applications. The corrosion-resistant properties and compliant surface finish make them suitable for outdoor, chemical, and marine environments, enhancing equipment longevity and reducing downtime.

Specification Summary & Compliance

This washer conforms to DIN 9021 standards with an inner diameter of 8.4 mm, outer diameter of 22 mm, and thickness range of 4.5–5.4 mm, ensuring precise fit for M8 screw sizes. Manufactured from 17-7 PH Stainless Steel with a hardness of Rockwell C40, it meets stringent industry specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable usage in global markets.