S-99041A223 0.531" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ideal for harsh industrial environments
• Exceptional durability and load distribution thanks to Rockwell B40 hardness and 1.5" square width
• Precise fit for 1/2" screws with 0.531" inner diameter, ensuring secure fastening and reduced vibration
• Heavy-duty performance with thickness ranging from 0.112" to 0.127" for reliable, long-term use
• Compliance with strict environmental standards including RoHS 3 and REACH, meeting global regulatory requirements
• Versatile inch system compatibility for seamless integration into existing machinery and equipment
• Enhanced safety and reliability in construction and industrial applications, minimizing maintenance needs

Professional Applications & Engineering Value

This zinc-plated steel square washer is engineered to address common industrial challenges such as corrosion, loosening under stress, and environmental compliance. The Rockwell B40 hardness ensures it withstands heavy loads and repetitive use without deformation, while the 1.5" width provides excellent surface coverage to prevent material damage and distribute pressure evenly. Its 0.531" inner diameter guarantees a snug fit for 1/2" screws, reducing the risk of fastener failure in high-vibration settings like machinery, construction frameworks, and outdoor equipment. The zinc plating offers a protective barrier against moisture and chemicals, making it a reliable choice for industrial washers in demanding sectors such as manufacturing, automotive, and infrastructure projects.

Specification Summary & Compliance

This square washer adheres to inch system measurements with an inner diameter of 0.531", thickness between 0.112" and 0.127", and width of 1.5", designed for use with 1/2" screw sizes. It meets Rockwell B40 hardness standards for consistent performance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global supply chains.