S-93744A140 0.344" ID x 0.75" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal conductivity due to pure copper material, ensuring efficient performance in electrical and heat transfer applications.
• Excellent corrosion resistance for long-lasting durability in harsh industrial environments, reducing maintenance and replacement costs.
• Precise dimensional fit with 0.344" ID and 0.75" OD, designed for 5/16" screws to provide secure fastening and even load distribution.
• Enhanced mechanical strength with Rockwell F77 hardness, offering reliable performance under high stress and vibration conditions.
• Compliance with environmental standards, meeting RoHS 3 and REACH regulations for safe, sustainable use in global markets.
• Consistent thickness control (0.052-0.072") ensures uniform sealing and spacing in assembly, improving overall system integrity.
• Broad industrial applicability in electrical systems, plumbing, and machinery where conductivity and corrosion resistance are critical.

Professional Applications & Engineering Value

This copper flat washer is engineered to address common industrial challenges, such as electrical grounding inefficiencies and corrosion-induced failures. Made from high-purity copper, it delivers exceptional electrical and thermal conductivity, making it ideal for applications in power distribution, electronics, and heating systems. The Rockwell F77 hardness ensures it withstands mechanical stresses without deforming, while the precise inch system dimensions (e.g., 0.344" ID for 5/16" screws) guarantee a snug fit, preventing loosening in vibrating environments. Its corrosion-resistant properties extend service life in moist or chemical-exposed settings, reducing downtime and maintenance. Commonly used in industrial washers for machinery, automotive, and electrical enclosures, this washer provides reliable performance where conductivity and durability are paramount.

Specification Summary & Compliance

This flat washer adheres to standard inch measurement tolerances, with an inner diameter of 0.344", outer diameter of 0.75", and thickness ranging from 0.052" to 0.072", ensuring compatibility with 5/16" screws. It meets Rockwell F77 hardness specifications for consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for environmentally conscious industrial applications.