S-91122A221 1.313" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional load distribution thanks to the 3" square design, minimizing surface pressure and preventing material damage.
• Precise compatibility for 1 1/4" screw sizes with a 1.313" inner diameter, ensuring secure and accurate fastening.
• Enhanced durability from Rockwell B84 hardness, providing reliable performance under high stress and repeated use.
• Consistent thickness tolerance between 0.220" and 0.280", guaranteeing uniform performance and ease of installation.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.
• Versatile inch system sizing for seamless integration with existing equipment and standard fastener inventories.

Professional Applications & Engineering Value

This square washer is engineered to address critical challenges in industrial fastening systems where vibration, corrosion, and high loads are common. Made from 18-8 Stainless Steel, it offers excellent resistance to rust and chemical exposure, making it suitable for applications in construction, machinery, marine, and chemical processing industries. The square shape provides a larger surface area compared to round washers, effectively distributing clamp load and preventing bolt head or nut embedding into soft materials. With its precise 1.313" ID and compatibility with 1 1/4" screw sizes, it ensures a snug fit that reduces loosening under dynamic loads. The Rockwell B84 hardness further enhances its ability to maintain integrity in demanding environments, offering long-term reliability and reduced maintenance costs for B2B clients.

Specification Summary & Compliance

This square washer features an inner diameter of 1.313", width of 3", and thickness ranging from 0.220" to 0.280", designed for use with 1 1/4" screws in the inch measurement system. It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B84, ensuring dimensional accuracy and mechanical performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial components.