S-99041A208 0.188" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments.
• Optimized load distribution due to the square shape and 0.75" width, reducing surface pressure and preventing fastener loosening.
• Precise fit for No. 8 screws with a 0.188" inner diameter, ensuring easy installation and secure fastening in assemblies.
• Enhanced durability from Rockwell B40 hardness, providing reliable performance under mechanical stress and vibration.
• Consistent thickness control between 0.042-0.051", guaranteeing uniform spacing and stability in repetitive applications.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for international supply chains.
• Versatile inch system compatibility, making it ideal for replacement or integration in existing metric-converted or US-based machinery.

Professional Applications & Engineering Value

This square washer is engineered to address common industrial challenges such as corrosion-induced failure and uneven load distribution. The zinc-plated steel material offers a protective barrier against moisture and chemicals, crucial for outdoor equipment, automotive assemblies, and electrical enclosures. Its square design increases the bearing surface area compared to round washers, effectively distributing clamp load and minimizing embedding in soft materials. With a precise 0.188" ID tailored for No. 8 screw applications, it ensures a snug fit that resists rotation during vibration, reducing maintenance needs. The Rockwell B40 hardness provides the necessary toughness for heavy-duty fastening in construction, machinery, and metal fabrication, where reliability is paramount. This washer delivers long-term value by enhancing assembly integrity and reducing downtime.

Specification Summary & Compliance

This square washer features an inner diameter of 0.188", thickness range of 0.042-0.051", and width of 0.75", designed for use with No. 8 screws in inch-based systems. Manufactured from zinc-plated steel with a hardness of Rockwell B40, it ensures dimensional accuracy and mechanical consistency. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming adherence to restrictions on hazardous substances and supporting sustainable procurement practices in industrial applications.