S-91133A180 1.062" ID Square Washers

Key Features & Benefits at a Glance

• Superior load distribution with 3" width square design, preventing surface damage and maintaining joint integrity under heavy loads
• Enhanced corrosion resistance through galvanized steel construction, ensuring long-term performance in harsh industrial environments
• Precise compatibility with 1" screw sizes thanks to 1.062" inner diameter, providing secure fastening without slippage
• Exceptional durability with Rockwell B40 hardness, maintaining structural integrity under repeated stress and vibration
• Consistent thickness control between 0.235-0.265" ensures uniform pressure distribution and reliable performance
• Full regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Optimized for inch-system applications in construction and industrial settings where standardized measurements are critical

Professional Applications & Engineering Value

This heavy-duty square washer addresses critical engineering challenges in industrial fastening systems where load distribution and corrosion resistance are paramount. The galvanized steel construction provides superior protection against environmental degradation, making it ideal for outdoor construction, structural steel connections, and machinery assembly exposed to moisture or chemical agents. The square configuration offers significantly larger surface contact area compared to round washers, effectively preventing embedment into softer materials and distributing clamping force across a wider area. With precise 1.062" inner diameter matching standard 1" screw sizes, this washer eliminates play and misalignment issues common in high-vibration applications. The combination of Rockwell B40 hardness and controlled thickness ensures consistent performance in heavy-load scenarios, from structural steel framing to industrial equipment maintenance, where fastener failure is not an option.

Specification Summary & Compliance

This square washer features inch system measurements with 1.062" inner diameter, 3" width, and thickness ranging from 0.235-0.265" for precise dimensional control. Manufactured from galvanized steel with Rockwell B40 hardness, it provides reliable mechanical properties for industrial applications. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) requirements as of January 17, 2023, including compliance with 233 SVHC substances, ensuring environmental responsibility and workplace safety standards.