S-99041A121 0.812" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced load distribution with 3" square design to prevent surface damage and fastener loosening under heavy loads
• Superior corrosion resistance through zinc-plated steel construction for extended service life in demanding environments
• Precision compatibility with 0.812" inner diameter specifically engineered for 3/4" screw applications
• Optimal thickness control (0.220-0.280") ensures consistent performance and reliable seating in assembly operations
• Exceptional mechanical strength with Rockwell B40 hardness rating to withstand high tension and vibration stresses
• Regulatory confidence with full RoHS 3 and REACH compliance for global industrial supply chain integration
• Heavy-duty construction in inch measurement system for seamless integration with North American industrial standards

Professional Applications & Engineering Value

This zinc-plated steel square washer delivers critical engineering solutions for industrial fastening systems requiring maximum load distribution. The substantial 3" width creates an expanded bearing surface that effectively redistributes clamping force, preventing material deformation and joint failure in structural applications. The Rockwell B40 hardness ensures mechanical integrity under sustained vibration and dynamic loads common in heavy machinery, construction equipment, and transportation infrastructure. The corrosion-resistant zinc plating provides essential protection against environmental degradation in outdoor or high-moisture installations. Engineered specifically for 3/4" screw size applications with precise 0.812" ID, this square washer maintains secure positioning during assembly while accommodating standard manufacturing tolerances.

Specification Summary & Compliance

This square washer features a 0.812" inner diameter with 3" width and controlled thickness range of 0.220-0.280" manufactured to standard inch system tolerances. Constructed from zinc-plated steel with Rockwell B40 hardness rating, the product demonstrates full compliance with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations current through January 17, 2023, including 233 SVHC substances.