S-93744A120 0.203" ID x 0.5" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal conductivity from high-purity copper material, ensuring efficient performance in electrical connections and heat transfer applications.
• Excellent corrosion resistance for long-lasting reliability in humid, chemical, or outdoor environments, reducing maintenance and replacement costs.
• Precise dimensional fit with 0.203" inner diameter designed specifically for No. 10 screws, providing secure fastening and preventing loosening under vibration.
• Enhanced durability with Rockwell F77 hardness, offering consistent performance under mechanical stress and repeated use in industrial settings.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and global market acceptance.
• Optimal load distribution thanks to the 0.5" outer diameter and flat design, minimizing surface damage and extending the life of assembled components.
• Wide application versatility in inch-system projects, from electrical panels to plumbing systems, due to standardized sizing and material properties.

Professional Applications & Engineering Value

This copper flat washer is engineered to address common challenges in electrical and plumbing systems, where conductivity and corrosion resistance are critical. The copper material ensures minimal energy loss in electrical connections, while its innate resistance to oxidation prevents degradation in moist or chemically aggressive environments. With a 0.203" inner diameter tailored for No. 10 screws, it provides a precise fit that reduces installation errors and enhances joint integrity. The flat washer design and Rockwell F77 hardness offer reliable load distribution and durability, making it ideal for applications like grounding systems, HVAC units, and water pipe fittings. By combining high conductivity with robust mechanical properties, this washer minimizes downtime and maintenance in demanding industrial and commercial settings.

Specification Summary & Compliance

This washer features an inner diameter of 0.203", outer diameter of 0.5", and thickness range of 0.033–0.047", conforming to standard inch-system measurements for compatibility with No. 10 screw sizes. It meets Rockwell F77 hardness specifications for consistent performance and is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally sensitive applications.