S-91133A185 1.062" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from galvanized steel coating, extending service life in harsh industrial environments
• Exceptional load distribution with 4" square design, preventing surface damage and maintaining joint integrity
• Precise 1" screw compatibility with 1.062" ID, ensuring secure fastening and reducing installation time
• Enhanced durability with Rockwell B40 hardness, providing reliable performance under heavy loads
• Consistent thickness control (0.235-0.265") for uniform pressure distribution and predictable performance
• Global compliance assurance meeting RoHS 3 and REACH standards for international project specifications
• Heavy-duty construction in inch measurement system, ideal for industrial machinery and structural applications

Professional Applications & Engineering Value

This galvanized steel square washer addresses critical engineering challenges in heavy-load applications where surface protection and corrosion resistance are paramount. The 4" square configuration provides maximum load distribution, preventing embedment into soft materials and reducing point loading on structural surfaces. The zinc galvanized coating offers superior protection against environmental factors, making these industrial washers ideal for outdoor construction, machinery bases, and structural steel connections. With precise 1.062" ID matching standard 1" screw sizes, installation efficiency improves while maintaining secure fastening. The Rockwell B40 hardness ensures the washer maintains its structural integrity under sustained pressure, solving common issues of deformation in heavy-duty applications.

Specification Summary & Compliance

Manufactured to inch system standards with critical dimensions including 4" width, 1.062" inner diameter, and controlled thickness range of 0.235-0.265". The galvanized steel construction meets industrial hardness requirements at Rockwell B40. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) standards current through January 17, 2023, covering 233 SVHC substances. Designed for use with standard 1" fasteners in industrial and construction applications requiring reliable load distribution and corrosion protection.