S-91133A191 1.562" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with galvanized steel construction for extended service life in harsh environments
• Superior load distribution due to 3" square design that prevents fastener embedding and material damage
• Precise compatibility with 1 1/2" screw sizes through 1.562" inner diameter for secure fastening applications
• Exceptional durability with Rockwell B40 hardness rating that maintains structural integrity under heavy loads
• Optimal thickness range (0.220-0.280") providing consistent performance and compression resistance
• Environmental compliance meeting both RoHS 3 and REACH standards for safe industrial usage
• Heavy-duty performance in inch measurement system for reliable integration with standard industrial equipment

Professional Applications & Engineering Value

This galvanized steel square washer delivers critical engineering solutions where standard washers fail. The substantial 3" width creates an expanded bearing surface that distributes loads effectively across a wider area, preventing sinkage into soft materials and reducing point loading in structural applications. The zinc coating provides essential corrosion protection for outdoor construction, machinery assemblies, and industrial equipment exposed to moisture or chemical environments. With its specific 1.562" inner diameter engineered for 1 1/2" screw sizes, this heavy-duty washer ensures precise fitment while the Rockwell B40 hardness maintains dimensional stability under sustained pressure. These characteristics make it ideal for bridging gaps in structural steel connections, reinforcing timber constructions, and providing reliable performance in mechanical systems where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This square washer features inch system dimensions including 1.562" inner diameter, 3" width, and thickness ranging 0.220-0.280". Manufactured from galvanized steel with Rockwell B40 hardness, the product complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) compliance standards as of January 17, 2023. The square washer design follows industrial standards for heavy-duty applications requiring enhanced load distribution characteristics.