S-98180A210 0.221" ID x 0.505" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior load distribution with precise 0.221" ID and 0.505" OD dimensions to prevent surface damage and maintain joint integrity
• Exceptional corrosion resistance from zinc-flake coating, ensuring long-term reliability in harsh industrial environments
• Maximum durability with Rockwell C38 hardness for sustained performance under high-stress applications
• Heavy-duty strength meeting Grade 8 specifications, providing reliable performance in critical fastener assemblies
• Industry-standard compatibility with ASME B18.21.1 compliance, ensuring precise fit and consistent performance
• Environmental compliance with RoHS 3 and REACH regulations, making them suitable for global industrial applications
• Optimized thickness range (0.036-0.065") for proper compression and vibration resistance in No. 10 screw applications

Professional Applications & Engineering Value

This Grade 8 SAE flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and high-strength performance are paramount. The zinc-flake coated steel construction provides superior protection against environmental degradation, while the precise dimensional tolerances ensure optimal load distribution across mating surfaces. Engineered specifically for No. 10 screw sizes in inch system applications, these washers prevent loosening under vibration and maintain bolt preload in heavy machinery, automotive assemblies, and structural frameworks. The combination of Rockwell C38 hardness and ASME B18.21.1 compliance guarantees consistent performance in demanding conditions where fastener failure is not an option, making them ideal for OEM and MRO applications requiring reliable, long-lasting fastening solutions.

Specification Summary & Compliance

This heavy-duty flat washer features precise dimensional specifications with 0.221" inner diameter, 0.505" outer diameter, and thickness ranging from 0.036" to 0.065". 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) environmental regulations, ensuring safe use across global industrial markets. The Grade 8 classification confirms the high-strength capabilities suitable for critical fastener applications requiring maximum reliability and durability.