S-90313A314 2.25" ID x 4" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional load distribution with a large 4" outer diameter, minimizing surface pressure and preventing material damage.
• Precise fit for 2" screws ensured by the 2.25" inner diameter, providing secure and stable fastening.
• Robust durability from the substantial 0.302-0.335" thickness, offering long-term reliability under heavy loads.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Versatile inch system compatibility for seamless integration with standard North American machinery and equipment.
• Reliable performance in demanding applications due to the flat washer design, maintaining bolt tension and joint integrity.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to solve critical challenges in heavy-duty industrial applications. Its corrosion-resistant properties make it indispensable in environments exposed to moisture, chemicals, and extreme weather, preventing fastener failure and reducing maintenance costs. The large 4" OD and substantial thickness provide superior load-bearing surface area, effectively distributing stress to protect connected materials from crushing, deformation, or surface damage. Specifically designed for 2" screw assemblies, it ensures a precise fit that maintains clamp load and prevents loosening under vibration, making it ideal for construction, machinery, and large-scale structural projects where reliability is non-negotiable.

Specification Summary & Compliance

This flat washer conforms to standard inch system dimensions with an inner diameter of 2.25", outer diameter of 4", and thickness range of 0.302-0.335". It is manufactured from 18-8 Stainless Steel for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.