S-91122A223 11 mm ID Square Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution: The 50mm square shape provides superior surface contact, reducing stress and preventing surface damage in heavy-duty applications.
• Superior Corrosion Resistance: Made from 18-8 Stainless Steel, this washer offers excellent durability against rust and corrosion in harsh environments.
• Optimized for M8 Fasteners: Precision 11mm inner diameter ensures a perfect fit for M8 screws, improving assembly accuracy and vibration resistance.
• Exceptional Mechanical Strength: With a Rockwell B84 hardness and 6.0mm thickness, it maintains integrity under high pressure and repeated loads.
• Regulatory Compliance Assurance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility for global supply chains.
• Metric System Compatibility: Designed to metric specifications for seamless integration with international engineering projects and equipment.
• Long-Term Reliability: The robust 6.0mm thickness and material grade ensure consistent performance, reducing maintenance needs and downtime.

Professional Applications & Engineering Value

This M8 square washer is engineered to address critical challenges in industrial settings where vibration loosening, corrosion, and high bearing loads are common. The 18-8 stainless steel construction provides inherent resistance to oxidation and chemical exposure, making it ideal for outdoor machinery, marine equipment, and food processing facilities. Its square design increases the clamping area compared to round washers, effectively distributing force and preventing bolt head embedment into soft materials. With a precise 11mm ID for M8 screw size compatibility, it ensures secure fastening in structural assemblies, automotive frames, and heavy machinery. The metric dimensions and Rockwell B84 hardness further support its use in precision engineering applications, delivering reliable performance under dynamic loads and reducing the risk of joint failure.

Specification Summary & Compliance

This washer features precise metric dimensions: 50mm width, 11mm inner diameter, and 6.0mm thickness, designed for M8 screw size applications. Manufactured from 18-8 Stainless Steel with a hardness of Rockwell B84, it adheres to standard industrial tolerances. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries worldwide.