S-91090A120 0.203" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Corrosion-resistant zinc-plated steel ensures long-lasting durability in harsh industrial environments, reducing replacement frequency and maintenance costs.
• Precise 0.203" inner diameter provides a secure fit for No. 10 screws, minimizing vibration loosening and enhancing assembly reliability.
• 1" outer diameter offers a wide bearing surface to distribute loads evenly, preventing surface damage and extending component life.
• Consistent thickness range of 0.042-0.051" guarantees uniform performance and easy installation across various applications.
• RoHS 3 and REACH compliance ensures safe, environmentally responsible use in global markets, meeting stringent regulatory standards.
• Ideal for industrial and commercial settings due to robust steel construction, supporting heavy-duty mechanical and hardware assemblies.

Professional Applications & Engineering Value

This zinc-plated steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and load distribution inefficiencies. The zinc plating provides a protective barrier against moisture and chemicals, making it suitable for outdoor or high-humidity environments. With its precise 0.203" ID and 1" OD, it ensures optimal alignment and stress dispersion for No. 10 screw applications, reducing the risk of joint failure in machinery, automotive, and construction assemblies. By combining corrosion resistance with dimensional accuracy, this washer enhances the longevity and reliability of fastened connections, minimizing downtime and maintenance in industrial washers and hardware systems.

Specification Summary & Compliance

This flat washer adheres to standard inch measurement tolerances, with an inner diameter of 0.203", outer diameter of 1", and thickness ranging from 0.042" to 0.051". It is designed for use with No. 10 screws and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial and commercial applications.