S-98900A334 2.625" ID x 4.5" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications
• Exceptional load distribution with 4.5" outer diameter, preventing surface damage and maintaining joint integrity under heavy loads
• Precision fit for 2 1/2" screws with 2.625" inner diameter, ensuring secure fastening and reducing installation time
• Enhanced durability with Rockwell B83 hardness, providing excellent resistance to deformation and long-term reliability
• Regulatory compliance assurance with RoHS 3 and REACH compliance, meeting strict environmental standards for global industrial use
• Consistent performance through controlled thickness (0.297-0.328"), ensuring uniform pressure distribution across applications
• Versatile compatibility with inch-system fasteners, making them suitable for various industrial equipment and machinery maintenance

Professional Applications & Engineering Value

This heavy-duty flat washer delivers critical engineering solutions where standard washers fail. The 18-8 stainless steel composition provides exceptional corrosion resistance, making it ideal for chemical processing, marine equipment, and food processing machinery where moisture and corrosive agents are prevalent. The substantial 4.5" outer diameter creates an optimal bearing surface that prevents bolt head embedment and distributes clamping force evenly, protecting softer materials from damage. With precision dimensions tailored for 2 1/2" screw size, these industrial washers eliminate play and vibration issues in heavy machinery, structural steel connections, and large-scale assembly applications. The controlled thickness variation ensures consistent performance in high-vibration environments, while the Rockwell B83 hardness maintains dimensional stability under extreme pressure, reducing maintenance frequency and downtime.

Specification Summary & Compliance

This flat washer features precise inch-system dimensions with 2.625" inner diameter and 4.5" outer diameter, manufactured to standard flat washer specifications for 2 1/2" screw size. The 18-8 stainless steel construction provides consistent mechanical properties with Rockwell B83 hardness rating. Product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for industrial fastener applications.