S-98019A520 0.812" ID x 2" OD MS15795-823; 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
• Optimized load distribution with precise 0.812" ID and 2" OD dimensions for 3/4" screw applications
• Enhanced durability achieved through Rockwell B70 hardness rating for reliable performance under heavy loads
• Guaranteed dimensional accuracy through compliance with MS15795-823, NASM15795, and ASME B18.21.1 specifications
• Consistent thickness control with 0.122-0.177" range ensuring uniform pressure distribution
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
• Reliable mechanical performance in inch system applications requiring precise flat washer solutions

Professional Applications & Engineering Value

This passivated 18-8 stainless steel flat washer delivers exceptional engineering value in demanding industrial environments where corrosion resistance and mechanical reliability are paramount. The precision-engineered dimensions (0.812" ID x 2" OD) provide optimal load distribution for 3/4" fasteners, preventing surface damage and maintaining joint integrity in heavy machinery, structural assemblies, and marine applications. The passivated surface treatment significantly enhances the inherent corrosion resistance of 18-8 stainless steel, making these industrial washers ideal for chemical processing, offshore operations, and outdoor installations exposed to moisture and aggressive elements. With consistent thickness control and Rockwell B70 hardness, these washers maintain dimensional stability under vibration and thermal cycling, reducing maintenance frequency and extending equipment service life in critical applications.

Specification Summary & Compliance

This flat washer maintains precise dimensional tolerances as specified in MS15795-823, NASM15795, and ASME B18.21.1 standards, ensuring reliable performance in inch system applications. The manufacturing process adheres to strict quality controls for internal diameter (0.812"), outer diameter (2"), and thickness range (0.122-0.177"). Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, confirming the absence of restricted substances. The 18-8 stainless steel material with passivated finish provides consistent mechanical properties and corrosion resistance suitable for demanding industrial applications requiring reliable flat washer performance.