S-98370A037 0.906" ID x 1.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically aggressive environments
• Enhanced load distribution with a large 1.75" outer diameter, preventing surface damage and joint loosening
• Precise fit for 7/8" screws with 0.906" inner diameter, ensuring secure fastening and vibration resistance
• Exceptional mechanical durability backed by Rockwell B83 hardness, maintaining integrity under high stress
• Long-term reliability in demanding applications due to consistent 0.136-0.161" thickness for uniform performance
• Compliance with global safety standards including RoHS 3 and REACH, ensuring safe use in regulated industries
• Broad industrial compatibility with inch measurement system, facilitating easy integration into existing assemblies

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer delivers critical engineering value by addressing common failure points in industrial fastening systems. Its corrosion-resistant properties make it indispensable for outdoor infrastructure, marine equipment, and chemical processing plants where moisture and corrosive agents degrade ordinary washers. The precise 0.906" ID and 1.75" OD dimensions ensure optimal load distribution, preventing bolt head embedment and surface deformation in high-vibration machinery. With Rockwell B83 hardness, it withstands repeated torque and pressure cycles without deformation, reducing maintenance frequency in heavy-duty applications like construction, automotive, and industrial machinery assembly. The inch-system compatibility simplifies sourcing and replacement across North American manufacturing sectors.

Specification Summary & Compliance

This flat washer meets standard inch-system dimensional tolerances with inner diameter of 0.906", outer diameter of 1.75", and thickness range of 0.136-0.161" for consistent performance. Manufactured from 18-8 stainless steel with Rockwell B83 hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to industrial safety and environmental standards for hazardous substance restrictions.