S-91122A213 0.563" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional load distribution with a large 3" square surface area, preventing surface damage and joint loosening
• Precise fit for 1/2" screws with a 0.563" inner diameter, ensuring secure fastening and reduced installation errors
• Enhanced durability and strength from Rockwell B84 hardness, providing reliable performance under heavy loads
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for safe, global use
• Consistent dimensional accuracy in inch measurements, guaranteeing compatibility with standard industrial components
• Robust thickness range (0.235-0.265") for optimal compression and vibration resistance in demanding applications

Professional Applications & Engineering Value

This heavy-duty square washer is engineered to address common industrial challenges such as corrosion, surface indentation, and fastener failure. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for outdoor, marine, and chemical processing equipment. The square design and substantial width provide a larger bearing surface, effectively distributing clamp load and preventing bolt heads or nuts from embedding into soft materials. With a precise 0.563" ID for 1/2" screw size applications, it ensures a snug fit, reducing the risk of misalignment and enhancing assembly efficiency. Ideal for construction, machinery, and structural frameworks, this washer maintains integrity in high-stress environments, supported by its Rockwell B84 hardness for long-term reliability.

Specification Summary & Compliance

This square washer adheres to inch system dimensions with an inner diameter of 0.563", thickness ranging from 0.235" to 0.265", and width of 3", designed specifically for 1/2" screw sizes. It meets industry standards for material quality and 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 various industrial and international applications.