S-92303A110 0.688" ID x 2.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments.
• Exceptional load distribution from the large 2.5" outer diameter, minimizing surface pressure and preventing material damage.
• Precise fit and secure fastening ensured by the 0.688" inner diameter, designed specifically for 5/8" screws.
• Enhanced durability and deformation resistance provided by the Rockwell B83 hardness rating.
• Reliable performance under stress due to the substantial 0.235-0.265" thickness for heavy-duty applications.
• Guaranteed environmental safety with full compliance to RoHS 3 and REACH standards.
• Broad compatibility with inch-system fasteners, simplifying sourcing and assembly in standard industrial settings.

Professional Applications & Engineering Value

This 5/8" flat washer is engineered to solve critical challenges in demanding industrial applications. Its 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor, marine, or chemical-exposed environments where fastener failure is not an option. The precise inch system dimensions ensure a perfect fit, preventing loosening under vibration and distributing clamp load effectively to protect softer surfaces from damage. The Rockwell B83 hardness ensures the washer maintains its shape and function under high pressure, offering long-term reliability in construction, machinery, and heavy equipment assembly. This combination of corrosion resistance, dimensional accuracy, and mechanical strength delivers consistent performance, reducing maintenance needs and downtime.

Specification Summary & Compliance

This flat washer features an Inner Diameter (ID) of 0.688", Outer Diameter (OD) of 2.5", and Thickness of 0.235-0.265", designed for a 5/8" screw size in the inch measurement system. It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B83 for reliable mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it meets stringent standards for hazardous substance restrictions and safe use in industrial markets.