S-91122A120 0.563" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced load distribution thanks to the 2" square design, preventing surface damage and loosening
• Precise fit for 1/2" screws with 0.563" inner diameter, ensuring secure fastening and vibration resistance
• Exceptional durability from Rockwell B83 hardness, maintaining structural integrity under heavy loads
• Consistent performance guaranteed by controlled thickness (0.235"-0.265") for uniform pressure application
• Compliance with global standards including RoHS 3 and REACH, ensuring safe and sustainable usage
• Broad compatibility with inch-system components, simplifying procurement and assembly processes

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this square washer addresses critical challenges in machinery, construction, and structural assemblies. The 18-8 stainless steel material provides excellent corrosion resistance, essential for outdoor or chemically exposed environments, while the square shape offers superior surface coverage compared to round washers, reducing point stress and preventing embedment. With a precise 0.563" inner diameter tailored for 1/2" screw size, it ensures reliable alignment and minimizes the risk of fastener failure due to misalignment or vibration. The Rockwell B83 hardness enhances wear resistance, making it suitable for heavy-duty washers applications where repeated loading and mechanical stress are common. This combination of material properties and dimensional accuracy delivers long-term reliability, reducing maintenance needs and downtime in professional settings.

Specification Summary & Compliance

This square washer features an inner diameter of 0.563", width of 2", and thickness range of 0.235"-0.265", manufactured to standard inch system tolerances for consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence. The 18-8 stainless steel construction and Rockwell B83 hardness meet industry requirements for mechanical fasteners, providing reliable service in various engineering applications.