S-91122A217 0.813" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional load distribution from the 3" square design, preventing surface damage and fastener loosening
• Precise fit for 3/4" screws with 0.813" inner diameter, ensuring secure fastening and alignment
• Enhanced durability with Rockwell B84 hardness, maintaining structural integrity under heavy stress
• Consistent thickness control between 0.235-0.265", providing reliable performance in assembly operations
• Full regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Heavy-duty performance in inch measurement system, compatible with standard industrial equipment and specifications

Professional Applications & Engineering Value

This heavy-duty 3" square washer delivers critical engineering value in demanding applications where corrosion resistance and load distribution are paramount. Manufactured from 18-8 stainless steel, it effectively combats rust and chemical degradation in marine, chemical processing, and outdoor industrial settings. The square configuration provides superior surface contact compared to round washers, preventing embedment into soft materials and distributing clamping force more evenly across joined components. With its 0.813" inner diameter precisely matching 3/4" fasteners, this washer eliminates play and misalignment in critical assemblies. The substantial 3" width and controlled thickness range make it ideal for structural steel connections, heavy machinery, and infrastructure projects where vibration resistance and long-term reliability are essential.

Specification Summary & Compliance

This square washer features inch system dimensions with 0.813" inner diameter, 3" width, and thickness maintained between 0.235-0.265" for consistent performance. Manufactured from 18-8 stainless steel with Rockwell B84 hardness, it meets industry standards for heavy-duty applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements for industrial components.