S-93661A131 1.5" ID x 2.75" OD SAE Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal conductivity for reliable performance in electrical and thermal management applications
• Excellent corrosion resistance ensuring long-term durability and reduced maintenance in harsh environments
• SAE standard compliance guarantees dimensional accuracy and interchangeability for 1 3/8" screw applications
• Robust inch-sized construction with 1.5" ID and 2.75" OD provides a secure, wide-bearing surface for heavy-duty use
• Precise thickness control (0.136-0.213") ensures consistent compression and sealing capabilities
• Full regulatory compliance with RoHS 3 and REACH standards for safe, environmentally responsible industrial use
• Versatile flat washer design ideal for distributing load and preventing surface damage in various assemblies

Professional Applications & Engineering Value

This copper flat washer delivers exceptional engineering value by addressing critical industrial challenges. Its high-purity copper material provides inherent corrosion resistance and outstanding electrical conductivity, making it indispensable for electrical grounding systems, power distribution equipment, and heat exchanger assemblies. The SAE standard design with precise 1.5" ID and 2.75" OD dimensions ensures perfect fitment for 1 3/8" screw applications, preventing loosening under vibration while maintaining reliable electrical connections. The flat washer configuration effectively distributes clamping force, protecting sensitive surfaces in automotive, marine, and industrial machinery applications where both electrical performance and mechanical integrity are paramount.

Specification Summary & Compliance

This copper flat washer meets SAE standards with precise dimensional specifications: 1.5" inner diameter, 2.75" outer diameter, and thickness ranging from 0.136" to 0.213". Designed specifically for 1 3/8" screw size applications in the inch system of measurement. The washer is manufactured from high-quality copper and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use worldwide.