S-90474A127 0.203" ID x 0.562" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior load distribution with 0.203" ID and 0.562" OD for enhanced joint stability in No. 10 screw applications
• Exceptional corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• High-strength performance with Grade 8 classification and Rockwell C38 hardness for demanding mechanical applications
• Precision dimensional control with thickness ranging 0.036-0.045" ensuring consistent seating and pressure distribution
• Regulatory compliance assurance meeting both RoHS 3 and REACH environmental standards for global supply chain compatibility
• Industry-standard reliability manufactured to ASME B18.21.1 specifications for guaranteed interchangeability and performance
• Durable material construction using plated steel for optimal balance of strength and corrosion protection

Professional Applications & Engineering Value

This Grade 8 flat washer delivers critical engineering solutions for heavy-duty assembly challenges where vibration resistance and joint integrity are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in industrial environments, while the precise dimensional tolerances ensure optimal load distribution across mating surfaces. Engineered specifically for No. 10 screw applications, this washer prevents bolt loosening under dynamic loads and protects sensitive components from surface damage. The combination of Rockwell C38 hardness and ASME B18.21.1 compliance makes it ideal for mechanical systems, heavy equipment, and structural applications requiring reliable, high-strength fastening solutions that maintain performance under extreme operating conditions.

Specification Summary & Compliance

This flat washer features precise inch-system dimensions with 0.203" inner diameter, 0.562" outer diameter, and controlled thickness between 0.036-0.045". Manufactured to ASME B18.21.1 standards, it ensures dimensional accuracy and mechanical performance for No. 10 screw applications. The product carries full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental requirements for hazardous substance restrictions. The Grade 8 classification confirms high tensile strength capability, supported by Rockwell C38 hardness testing for consistent mechanical properties across production batches.