S-98026A117 0.688" ID x 1.75" OD ASME B18.21.1 General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black protective coating for extended service life in harsh industrial environments
• Superior mechanical strength with Grade 8 classification ensuring reliable performance under high-stress applications
• Precise dimensional compatibility with 0.688" ID and 1.75" OD designed specifically for 5/8" fasteners
• Enhanced surface durability with Rockwell C38 hardness providing excellent wear resistance
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for global industrial applications
• Optimal load distribution through USS flat design that prevents surface damage and maintains joint integrity

Professional Applications & Engineering Value

This Grade 8 USS flat washer delivers critical engineering solutions for heavy-duty applications where corrosion resistance and mechanical strength are paramount. The black corrosion-resistant coated steel construction provides superior protection against environmental degradation, making it ideal for outdoor infrastructure, industrial machinery, and marine applications. The 5/8" size compatibility combined with the USS designation ensures proper load distribution across fastened joints, preventing surface damage and maintaining structural integrity under vibration and thermal cycling. Engineers specify this washer for applications requiring ASME B18.21.1 compliance where consistent performance and dimensional accuracy are non-negotiable. The combination of Rockwell C38 hardness and Grade 8 strength classification makes it suitable for high-torque applications in construction, manufacturing, and transportation equipment where fastener failure is not an option.

Specification Summary & Compliance

This USS flat washer features precise dimensional specifications with 0.688" inner diameter, 1.75" outer diameter, and thickness ranging from 0.122" to 0.146". Manufactured to ASME B18.21.1 standards for dimensional consistency and performance reliability. The washer carries Grade 8 strength classification with Rockwell C38 hardness for superior mechanical properties. Compliance certifications include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and safety standards are met for industrial applications worldwide.