S-93661A118 0.25" ID x 0.562" OD SAE Washers

Key Features & Benefits at a Glance

• Superior electrical conductivity for reliable current transfer in electrical assemblies
• Excellent corrosion resistance ensuring long-term performance in harsh environments
• Precision SAE dimensions (0.25" ID, 0.562" OD) for perfect fit with No. 12 screws
• Optimal thickness range (0.051-0.080") providing consistent compression and sealing
• REACH compliance guaranteeing environmental safety and regulatory acceptance
• Pure copper construction offering excellent malleability for secure sealing surfaces
• SAE standard compliance ensuring interchangeability and engineering reliability

Professional Applications & Engineering Value

These copper flat washers deliver exceptional performance in critical electrical and plumbing applications where reliable conductivity and corrosion resistance are paramount. The pure copper material provides superior electrical transfer capabilities while naturally resisting oxidation, making them ideal for electrical grounding systems, transformer connections, and high-frequency electronic assemblies. In plumbing systems, these SAE standard washers create reliable seals in water and gas lines, while their precise 0.25" ID dimension ensures perfect alignment with No. 12 fasteners. The combination of electrical conductivity and mechanical durability solves common industry challenges of galvanic corrosion and poor current transfer in demanding industrial environments.

Specification Summary & Compliance

Manufactured to SAE standards with precise dimensional tolerances including 0.25" inner diameter, 0.562" outer diameter, and thickness range of 0.051-0.080" for No. 12 screw applications. These copper flat washers are fully REACH compliant (EC 1907/2006) meeting the latest substance restriction requirements as of June 14, 2023, with 235 SVHC compliance. The inch system measurement ensures compatibility with North American industrial standards and specifications.