S-98026A121 1.062" ID x 2.5" OD ASME B18.21.1 General Purpose Washers

Key Features & Benefits at a Glance

• Superior load distribution with 2.5" outer diameter to prevent surface damage and embedment under high-stress conditions
• Exceptional corrosion resistance through black protective coating, extending service life in harsh industrial environments
• Maximum hardness performance with Rockwell C38 rating to maintain structural integrity under heavy loads
• Precision Grade 8 compatibility ensuring perfect fit with 1" diameter fasteners for critical assembly applications
• Rigorous quality assurance through ASME B18.21.1 compliance, guaranteeing dimensional accuracy and reliability
• Enhanced safety margins with heavy-duty steel construction suitable for high-vibration and high-tension applications
• Global regulatory compliance meeting RoHS 3 and REACH standards for international industrial projects

Professional Applications & Engineering Value

These Grade 8 USS flat washers deliver critical engineering solutions for industrial applications where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction provides lasting protection against environmental degradation, while the substantial 2.5" OD distributes clamping forces effectively to prevent joint failure. Engineered specifically for 1" diameter fasteners with precise 1.062" ID, these washers maintain bolt preload in high-vibration machinery, construction equipment, and heavy structural assemblies. The Rockwell C38 hardness ensures the washer maintains its form under extreme pressure, making it ideal for critical connections in manufacturing, infrastructure, and transportation sectors where reliability cannot be compromised.

Specification Summary & Compliance

This USS flat washer features precise dimensional specifications with 1.062" inner diameter, 2.5" outer diameter, and thickness ranging 0.136-0.160". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance consistency. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global industrial applications. Manufactured from high-strength steel with black corrosion-resistant coating to provide lasting performance in demanding conditions.