S-98026A123 1.375" ID x 3" 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 environments
• Maximum load distribution with 3" outer diameter to prevent surface damage and material embedment
• Superior strength performance meeting Grade 8 requirements for high-stress industrial applications
• Precise compatibility with 1 1/4" screws through exact 1.375" inner diameter sizing
• Enhanced durability with Rockwell C38 hardness rating for long-term reliability under heavy loads
• Industry-standard compliance with ASME B18.21.1 specifications for guaranteed dimensional accuracy
• Environmental responsibility through RoHS 3 and REACH compliance for sustainable operations

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction provides superior protection against environmental degradation, significantly extending component lifespan in demanding conditions. With its Grade 8 strength classification and Rockwell C38 hardness, this washer effectively distributes clamping forces and prevents joint loosening in heavy machinery, structural steel connections, and high-vibration environments. The precisely engineered dimensions (1.375" ID x 3" OD) ensure optimal performance with 1 1/4" fasteners, making it ideal for construction equipment, industrial machinery, and infrastructure projects requiring reliable, long-lasting fastening solutions that withstand extreme operational stresses.

Specification Summary & Compliance

This heavy-duty flat washer features dimensional specifications compliant with ASME B18.21.1 standards, ensuring precise fit and function. The component maintains critical thickness tolerance between 0.136-0.160" for consistent performance. Manufacturing adheres to Grade 8 strength requirements with verified Rockwell C38 hardness for superior mechanical properties. Environmental compliance is confirmed through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, meeting the latest regulatory standards for hazardous substance restrictions and chemical safety in industrial applications.