S-91122A219 1.063" ID Square Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Superior load distribution thanks to the large 3" width square design, minimizing surface pressure and preventing material damage.
• Reliable fit and secure fastening ensured by the precise 1.063" inner diameter, designed specifically for 1" screw sizes.
• Enhanced durability and deformation resistance provided by the substantial 0.235-0.265" thickness and Rockwell B84 hardness.
• Long-term performance in heavy-duty applications due to the robust material and structural integrity of the square washer.
• Guaranteed environmental and safety compliance, meeting RoHS 3 and REACH standards for responsible manufacturing.
• Broad compatibility with inch-system fasteners and components, simplifying procurement for North American industrial projects.

Professional Applications & Engineering Value

This heavy-duty square washer is engineered to solve critical challenges in industrial applications where standard washers fail. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for demanding environments like chemical processing, marine equipment, and construction. Its square shape and large 3" width offer a significantly larger bearing surface compared to round washers, effectively distributing clamp load and preventing bolt head or nut embedment into soft materials. This is crucial for maintaining structural integrity in assemblies using 1" screw sizes. The precise 1.063" ID ensures a snug fit, reducing the risk of misalignment during installation. With its Rockwell B84 hardness and substantial thickness, this washer withstands high vibrational forces and heavy loads, providing a reliable, long-lasting solution for machinery, structural steel connections, and heavy equipment manufacturing.

Specification Summary & Compliance

This square washer conforms to standard inch system dimensions with an Inner Diameter of 1.063", a Width of 3", and a Thickness range of 0.235-0.265". It is manufactured from 18-8 Stainless Steel with a material hardness of Rockwell B84 and is engineered for use with 1" screw size fasteners. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of restricted hazardous substances.