S-97725A222 0.125" ID x 0.281" OD Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal conductivity from pure copper construction, ensuring optimal performance in electrical and thermal management applications.
• Excellent corrosion resistance for long-lasting reliability in harsh or humid industrial environments.
• Precise dimensional fit with a 0.125" inner diameter designed specifically for No. 4 screws, providing secure fastening and load distribution.
• Durable and malleable material that conforms to surfaces under pressure, creating a tighter, more effective seal.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.
• Consistent thickness range (0.024" - 0.038") for reliable performance and predictable compression in assembly processes.

Professional Applications & Engineering Value

These copper flat washers are engineered to address critical needs in electrical and mechanical assemblies where conductivity and corrosion resistance are paramount. The inherent properties of copper material make these washers ideal for electrical grounding, busbar connections, and thermal management systems, preventing galvanic corrosion and ensuring stable electrical contact. Their flat profile and specified dimensions (0.125" ID, 0.281" OD) provide a reliable bearing surface for No. 4 screws, distributing clamp load evenly and protecting sensitive components from damage. This combination of material excellence and precise engineering delivers long-term value by reducing maintenance, preventing failures, and enhancing the overall durability of industrial equipment, automotive systems, and electronic enclosures.

Specification Summary & Compliance

This copper flat washer conforms to standard inch system dimensions with an inner diameter of 0.125", outer diameter of 0.281", and a thickness range of 0.024" to 0.038", ensuring compatibility with No. 4 screw size fasteners. The product is manufactured to provide consistent performance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for hazardous substances.