S-98019A514 0.656" ID x 1.312" OD MS15795-820; NASM15795; ASME B18.21.1 Mil. Spec. Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional durability and load distribution with Rockwell B70 hardness, preventing deformation under pressure
• Precise dimensional fit with 0.656" ID and 1.312" OD, ensuring reliable performance with 5/8" fasteners
• Compliance with major industry standards including MS15795-820, NASM15795, and ASME B18.21.1 for guaranteed quality
• Enhanced environmental safety through RoHS 3 and REACH compliance, meeting strict regulatory requirements
• Optimized thickness range (0.074-0.121") provides consistent spacing and vibration resistance in assemblies
• Long-term reliability in demanding applications due to material properties and manufacturing precision

Professional Applications & Engineering Value

This 5/8" flat washer delivers critical engineering value in industrial settings where corrosion resistance and mechanical integrity are paramount. Manufactured from passivated 18-8 stainless steel, it effectively prevents galvanic corrosion and withstands exposure to moisture, chemicals, and extreme temperatures. The precise 0.656" ID and 1.312" OD dimensions ensure perfect alignment with standard 5/8" fasteners, distributing clamp load evenly to prevent joint loosening and surface damage. With Rockwell B70 hardness, it maintains structural integrity under high stress, making it ideal for heavy machinery, construction equipment, and aerospace assemblies where vibration resistance and long-term performance are critical. Compliance with MS15795-820, NASM15795, and ASME B18.21.1 standards guarantees consistent quality and interchangeability across industrial applications.

Specification Summary & Compliance

This flat washer features precise inch-system dimensions: 0.656" ID, 1.312" OD, and thickness ranging 0.074-0.121". Manufactured from passivated 18-8 stainless steel with Rockwell B70 hardness, it meets stringent industry specifications including MS15795-820, NASM15795, and ASME B18.21.1. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for global industrial applications.