S-93744A190 0.688" ID x 1.75" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-purity copper material, extending service life in harsh industrial environments
• Excellent electrical conductivity ensures reliable performance in electrical and grounding applications
• Optimized thermal performance for applications requiring heat dissipation and temperature management
• Precise dimensional fit with 0.688" ID and 1.75" OD specifically engineered for 5/8" screw applications
• Enhanced durability with Rockwell F77 hardness rating for long-term performance under load
• Regulatory compliance with RoHS 3 and REACH standards for global industrial applications
• Reliable sealing capability through copper's natural malleability and consistent thickness (0.083-0.103")

Professional Applications & Engineering Value

This copper flat washer delivers exceptional engineering value in demanding applications where electrical conductivity and corrosion resistance are critical. The copper material provides natural anti-galling properties and maintains performance in high-temperature environments, making it ideal for electrical panels, transformers, and power distribution systems. The precise inch-system dimensions (0.688" ID x 1.75" OD) ensure perfect fitment for 5/8" screws, preventing loosening and maintaining consistent clamping force. In industrial settings, these flat washers solve common challenges of electrical continuity loss and fastener corrosion, particularly in marine, chemical processing, and outdoor electrical applications where environmental factors degrade standard washers.

Specification Summary & Compliance

This copper flat washer features precise inch-system dimensions with 0.688" inner diameter, 1.75" outer diameter, and thickness ranging from 0.083" to 0.103". The washer is manufactured to exacting standards with Rockwell F77 hardness for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide. The washer is specifically designed for use with 5/8" screws in various industrial fastening systems.