S-98970A311 0.625" ID x 1.469" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection through hot-dipped galvanized steel coating for extended service life in harsh environments
• Optimized load distribution with 1.469" OD and 0.625" ID design to prevent surface damage and fastener loosening
• Precision compatibility with 9/16" screws for secure, reliable connections in industrial assemblies
• Enhanced durability with thickness range of 0.086-0.132" to withstand vibration and mechanical stress
• Industry-standard compliance with ASME B18.21.1 specifications ensuring consistent quality and performance
• Environmental responsibility with RoHS 3 compliance for safe use across regulated industries
• Versatile inch-system sizing for seamless integration with existing USS standard equipment and components

Professional Applications & Engineering Value

These USS flat washers deliver exceptional engineering value in demanding industrial applications where corrosion resistance and load distribution are critical. The hot-dipped galvanized steel construction provides a thick, durable zinc coating that effectively protects against rust and environmental degradation, making these flat washers ideal for outdoor equipment, marine environments, and chemical processing facilities. The precise 0.625" ID and 1.469" OD dimensions ensure perfect fitment with 9/16" screws, preventing bolt head embedment and distributing clamping forces evenly across surfaces. This ASME B18.21.1 compliant design solves common issues of joint failure and surface damage in heavy machinery, structural steel connections, and industrial maintenance applications where vibration and dynamic loads are present.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional standards with precise inch-system measurements: 0.625" inner diameter, 1.469" outer diameter, and thickness ranging 0.086-0.132". These USS flat washers maintain standard inch tolerances for consistent performance across industrial applications. The product is fully RoHS 3 (2015/863/EU) compliant and manufactured using hot-dipped galvanized steel processes that meet industrial corrosion protection requirements. Designed specifically for use with 9/16" screw size fasteners in mechanical and structural applications.