S-97725A267 0.406" ID x 0.656" OD Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality aluminum construction for extended service life in harsh environments
• Excellent electrical conductivity ideal for applications requiring electrical grounding or current transfer
• Precise dimensional fit with 0.406" ID specifically engineered for secure 3/8" screw applications
• Optimized load distribution through 0.656" OD design that minimizes surface pressure and material stress
• Consistent performance ensured by controlled thickness range of 0.055-0.069" for reliable seating
• Environmental compliance meeting RoHS 3 and REACH standards for global manufacturing applications
• Lightweight advantage of aluminum material reducing overall assembly weight without compromising strength

Professional Applications & Engineering Value

This aluminum flat washer delivers critical engineering solutions where corrosion resistance and electrical conductivity are paramount. The precision-engineered dimensions (0.406" ID x 0.656" OD) ensure perfect compatibility with 3/8" screw size applications, preventing loosening and maintaining clamp load integrity. In electrical assemblies, the aluminum material provides essential grounding capabilities while resisting galvanic corrosion. The controlled thickness range of 0.055-0.069" guarantees consistent performance in industrial fastening systems, automotive applications, and electronic enclosures where vibration resistance and thermal conductivity are crucial. These flat washers effectively distribute load pressure across wider surfaces, protecting sensitive materials from damage during tightening operations.

Specification Summary & Compliance

This aluminum flat washer features precision inch dimensions with 0.406" inner diameter and 0.656" outer diameter, specifically designed for 3/8" screw size applications. The thickness is manufactured to 0.055-0.069" tolerance range for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) standards and meets REACH (EC 1907/2006) requirements (updated 06/14/2023, 235 SVHC), ensuring environmental safety and regulatory acceptance for international industrial applications.