S-98019A509 0.531" ID x 1.062" OD MS15795-818; NASM15795; ASME B18.21.1 Mil. Spec. Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Exceptional load distribution through precise 1.062" OD and 0.531" ID dimensions, preventing surface damage and joint loosening
• Enhanced durability with Rockwell B70 hardness, maintaining structural integrity under high-stress conditions
• Industry-standard compliance meeting MS15795-818, NASM15795, and ASME B18.21.1 specifications for reliable performance
• Environmental responsibility with RoHS 3 and REACH compliance, ensuring safe use in regulated applications
• Optimal thickness control (0.074-0.121") providing consistent spacing and reliable fastening performance
• Perfect fit for 1/2" fasteners ensuring secure installation and vibration resistance in industrial assemblies

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these passivated 18-8 stainless steel flat washers provide critical protection against galvanic corrosion and chemical degradation. The precision thickness control (0.074-0.121") ensures uniform load distribution across mating surfaces, preventing stress concentration and material deformation in heavy-duty assemblies. Ideal for industrial machinery, marine equipment, and chemical processing applications, these washers maintain their structural integrity under continuous vibration and thermal cycling. The MS15795-818 and NASM15795 compliance guarantees aerospace-grade reliability, while the ASME B18.21.1 conformity ensures mechanical system compatibility across various engineering disciplines.

Specification Summary & Compliance

This 1/2" flat washer features precise dimensional tolerances with 0.531" inner diameter and 1.062" outer diameter, manufactured to MS15795-818, NASM15795, and ASME B18.21.1 standards. The passivated 18-8 stainless steel construction provides consistent Rockwell B70 hardness throughout the component. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for global industrial applications.