S-98026A111 0.312" ID x 0.75" OD General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 0.75" OD and 0.312" ID, reducing surface pressure and preventing joint loosening in high-vibration environments
• Superior corrosion resistance thanks to black protective coating, extending service life in harsh industrial conditions
• Maximum mechanical strength with Grade 8 classification and Rockwell C38 hardness, ensuring reliable performance under heavy loads
• Precise dimensional compatibility with 1/4" fasteners, providing secure fit and optimal force distribution
• Enhanced durability through controlled thickness (0.055-0.072"), maintaining flatness and preventing deformation under pressure
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• USS standard conformity ensuring interchangeability and reliable performance in industrial fastener systems

Professional Applications & Engineering Value

These Grade 8 USS flat washers deliver critical engineering solutions where corrosion resistance and heavy-duty performance are paramount. The black corrosion-resistant coated steel construction provides essential protection against environmental degradation in outdoor equipment, marine applications, and industrial machinery. With their USS standard dimensions and 1/4" screw compatibility, these washers prevent bolt head embedding, distribute clamping forces evenly, and maintain joint integrity in high-stress assemblies. The combination of Rockwell C38 hardness and precise thickness control ensures these components withstand extreme vibration and loading conditions without compromising their protective function or dimensional stability.

Specification Summary & Compliance

Manufactured to USS flat washer standards with precise dimensional tolerances: 0.312" inner diameter, 0.75" outer diameter, and thickness ranging 0.055-0.072". Constructed from black corrosion-resistant coated steel with Rockwell C38 hardness and certified to Grade 8 strength classification. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and chemical substance restrictions adherence for industrial applications.