S-98026A039 1.25" ID x 2.75" OD ASME B18.21.1 Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
• Superior load distribution due to large 2.75" OD and 1.25" ID, preventing surface damage and joint loosening
• High-strength performance with Grade 8 classification and Rockwell C38 hardness for demanding applications
• Precise dimensional compatibility specifically designed for 1 1/8" screw sizes, ensuring perfect fit and function
• Enhanced durability through controlled thickness (0.136-0.192") for consistent performance under heavy loads
• Regulatory compliance assurance meeting ASME B18.21.1 standards and REACH environmental requirements
• Reliable industrial-grade construction using USS flat washer design for critical fastener applications

Professional Applications & Engineering Value

These Grade 8 USS flat washers deliver critical engineering solutions for heavy-duty industrial applications where vibration resistance and load distribution are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion resistance, making them ideal for outdoor equipment, structural steel connections, and machinery subjected to environmental exposure. With Rockwell C38 hardness and Grade 8 strength classification, these washers maintain integrity under extreme pressure, preventing bolt loosening and surface damage in high-vibration environments. The precise 1.25" ID and 2.75" OD dimensions ensure optimal load distribution for 1 1/8" screw applications, while the USS designation guarantees compatibility with standard industrial fastener systems requiring reliable performance in critical assemblies.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with inch system measurements: 1.25" ID x 2.75" OD, thickness range 0.136-0.192". Features Grade 8 strength classification with Rockwell C38 hardness for high-stress applications. Compliant with REACH (EC 1907/2006) regulations (06/14/2023, 235 SVHC) for environmental safety. Designed specifically for use with 1 1/8" screws in industrial and construction applications requiring heavy-duty flat washers.