S-98370A009 0.172" ID x 0.375" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel, ideal for harsh or humid industrial environments, extending service life.
• Enhanced load distribution with precise 0.172" ID and 0.375" OD, preventing surface damage and loosening under vibration.
• Excellent mechanical durability due to Rockwell B83 hardness, resisting deformation under high clamping forces.
• Reliable fit for No. 8 screws, ensuring secure fastening and reducing assembly time in production lines.
• Consistent thickness (0.049-0.068") for uniform pressure application, minimizing stress concentration points.
• Compliance with RoHS 3 and REACH, meeting strict environmental regulations for global industrial supply chains.
• Broad compatibility with inch-system components, simplifying sourcing and replacement in existing setups.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as fastener failure due to corrosion and uneven load distribution. Its corrosion-resistant properties make it suitable for applications in chemical processing, marine equipment, and outdoor machinery, where exposure to moisture and chemicals is frequent. The precise 0.172" ID and 0.375" OD ensure a snug fit for No. 8 screws, reducing the risk of loosening under dynamic loads and vibrations. By providing a reliable barrier between the screw and surface, it prevents galvanic corrosion and distributes clamping force evenly, enhancing the longevity of assembled structures. This washer is a cost-effective solution for industries requiring durable, compliant fasteners that meet rigorous RoHS and REACH standards, ensuring safety and sustainability in manufacturing processes.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.172", outer diameter of 0.375", and thickness ranging from 0.049" to 0.068", designed for use with No. 8 screws in the inch system. It is manufactured from 18-8 stainless steel with a hardness of Rockwell B83, ensuring dimensional accuracy and mechanical strength. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial applications.