S-90481A205 0.562" ID x 1.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide steel finish, extending service life in harsh industrial environments
• Precise dimensional fit with 0.562" inner diameter specifically engineered for secure mounting on 1/2" screws
• Optimal load distribution thanks to the large 1.625" outer diameter, preventing surface damage and joint loosening
• Consistent performance ensured by controlled thickness range of 0.080-0.115" for reliable compression and spacing
• Enhanced durability through robust steel construction, maintaining integrity under repeated mechanical stress
• Regulatory compliance with RoHS 3 and REACH standards, making them suitable for global industrial supply chains
• Versatile inch system compatibility for seamless integration with standard US hardware and equipment

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers critical engineering value by addressing common failure points in mechanical assemblies. The black-oxide surface treatment provides a protective barrier against oxidation and moisture, significantly reducing maintenance needs in outdoor or high-humidity applications. With its precise 0.562" ID matching standard 1/2" screw sizes, it eliminates play and misalignment during installation. The substantial 1.625" OD creates an expanded bearing surface that distributes clamping force evenly, preventing embedment into soft materials and protecting expensive components from damage. These industrial flat washers are engineered solutions for automotive, construction, and heavy machinery applications where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

Manufactured to standard inch dimensions with 0.562" inner diameter, 1.625" outer diameter, and 0.080-0.115" thickness range for consistent performance. This flat washer complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and material safety. Designed specifically for use with 1/2" screw sizes in various industrial and mechanical applications.