S-91122A130 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 thanks to the 2" square design, preventing surface damage and fastener loosening
• Precise fit for 3/4" screws with 0.813" inner diameter, ensuring secure and stable fastening assemblies
• Enhanced durability and wear resistance from Rockwell B83 hardness, extending service life under high stress
• Consistent thickness control (0.235-0.265") for uniform clamping force and reliable performance
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries
• Broad industrial compatibility with inch measurement system, simplifying procurement and replacement

Professional Applications & Engineering Value

This square washer is engineered to address critical challenges in industrial applications where vibration, corrosion, and high loads compromise fastener integrity. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor machinery, marine equipment, and chemical processing plants. Its square shape offers a larger bearing surface compared to round washers, effectively distributing pressure and preventing embedment into soft materials. With a precise 0.813" ID tailored for 3/4" screw size, it ensures a snug fit that minimizes movement and maintains joint integrity. The Rockwell B83 hardness further enhances its ability to withstand repetitive stress, reducing maintenance frequency and downtime in heavy-duty applications.

Specification Summary & Compliance

This square washer features an inner diameter of 0.813", width of 2", and thickness range of 0.235-0.265" for precise dimensional control. Manufactured from 18-8 Stainless Steel with a hardness of Rockwell B83, it meets industry standards for mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial sectors.