S-91133A130 0.812" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanized steel construction, extending service life in harsh industrial environments
• Exceptional load distribution from the 2" square design, preventing surface damage and maintaining joint integrity
• Precise fit for 3/4" screws with 0.812" inner diameter, ensuring secure fastening and reducing installation errors
• Consistent performance guaranteed by Rockwell B40 hardness, providing reliable strength under mechanical stress
• Enhanced durability with 0.235-0.265" thickness range, offering robust support for heavy-duty applications
• Global compliance assurance meeting RoHS 3 and REACH standards, ensuring safe use in regulated markets
• Versatile inch-system compatibility designed for seamless integration with standard industrial equipment and components

Professional Applications & Engineering Value

This galvanized steel square washer delivers critical engineering solutions where standard washers fall short. The zinc-coated material actively combats rust and corrosion in outdoor construction, machinery assembly, and structural steelwork, significantly reducing maintenance costs. Its 2" width and square profile provide a larger bearing surface than round washers, effectively distributing clamp load to prevent bolt head embedment in soft materials and surface deformation in wood or composite applications. Engineered for 3/4" screws, it ensures precise alignment in heavy-load connections, from industrial equipment framing to infrastructure projects. The Rockwell B40 hardness maintains dimensional stability under vibration and dynamic loads, making it ideal for construction washers and manufacturing fixtures where joint integrity is paramount.

Specification Summary & Compliance

This square washer features an inner diameter of 0.812" with thickness tolerance of 0.235-0.265", manufactured to standard inch system specifications for compatibility with 3/4" screw size fasteners. The galvanized steel construction provides consistent performance with Rockwell B40 hardness rating. Product complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as steel alloying element and is fully REACH (EC 1907/2006) compliant with the latest SVHC list (01/17/2023, 233 substances), meeting international regulatory requirements for industrial components.