S-98026A127 2.625" ID x 5" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating for extended service life in harsh industrial environments
• Exceptional load distribution thanks to 5" outer diameter design, preventing surface damage and joint loosening
• High-strength performance with Grade 8 classification and Rockwell C38 hardness for demanding applications
• Precise compatibility with 2 1/2" screw sizes and 2.625" inner diameter for secure fastening fit
• Enhanced durability through inch-system USS specification compliance and robust steel construction
• Regulatory compliance assurance with REACH standards for safe industrial use and supply chain confidence
• Optimal thickness range (0.210-0.280") providing consistent compression and vibration resistance

Professional Applications & Engineering Value

This Grade 8 USS flat washer delivers critical engineering solutions for heavy-duty industrial applications where vibration resistance and load distribution are paramount. The zinc yellow-chromate plated steel construction provides exceptional corrosion protection in demanding environments including construction, machinery assembly, and structural steel connections. With its 5" OD and 2.625" ID, this washer effectively distributes clamping force over a wider surface area, preventing embedment and maintaining bolt preload in high-vibration settings. The Rockwell C38 hardness ensures the washer maintains its structural integrity under extreme pressure, while the USS specification guarantees dimensional consistency for reliable performance in critical fastening systems requiring 2 1/2" screw compatibility.

Specification Summary & Compliance

This heavy-duty flat washer meets USS specifications with precise dimensional tolerances including 2.625" inner diameter, 5" outer diameter, and thickness range of 0.210-0.280". Manufactured from high-strength steel with Rockwell C38 hardness and classified as Grade 8 for maximum performance. The zinc yellow-chromate plating provides superior corrosion protection while maintaining REACH compliance (EC 1907/2006) with current substance restrictions adherence. Designed specifically for compatibility with 2 1/2" screw sizes in inch measurement system applications.