S-90474A131 0.469" ID x 1.125" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with precise 0.469" ID and 1.125" OD dimensions, preventing surface damage and bolt head embedment
• Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• Maximum strength reliability with Grade 8 classification and Rockwell C38 hardness for heavy-duty applications
• Consistent performance guaranteed through ASME B18.21.1 compliance and inch system standardization
• Environmental compliance assurance with RoHS 3 and REACH standards, meeting global regulatory requirements
• Optimized thickness range (0.056-0.071") provides perfect compression and vibration resistance
• Perfect compatibility with 7/16" fasteners, ensuring secure fit and uniform pressure distribution

Professional Applications & Engineering Value

These Grade 8 flat washers deliver critical engineering solutions where high-strength performance and corrosion resistance are paramount. Manufactured from zinc yellow-chromate plated steel, they provide superior protection against galvanic corrosion and chemical exposure in demanding environments. The precise dimensional control (0.469" ID, 1.125" OD) ensures optimal load distribution, preventing joint loosening under extreme vibration and thermal cycling. Ideal for heavy-duty industrial applications including construction equipment, automotive assemblies, and machinery manufacturing, these washers maintain structural integrity while meeting rigorous ASME B18.21.1 specifications. The combination of Rockwell C38 hardness and controlled thickness provides consistent compression without deformation, making them essential components for critical bolted connections where failure is not an option.

Specification Summary & Compliance

This flat washer features precise inch system dimensions with 0.469" internal diameter, 1.125" outer diameter, and thickness ranging 0.056-0.071". Manufactured to exacting ASME B18.21.1 specifications with Grade 8 strength classification and Rockwell C38 hardness for maximum durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across global industrial markets while maintaining superior mechanical properties.