S-97725A580 28.3 mm ID x 35.9 mm OD DIN 7603 Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior electrical conductivity ensures reliable current flow in electrical assemblies
• Excellent corrosion resistance extends service life in harsh or humid environments
• Non-magnetic properties prevent interference in sensitive electronic applications
• Precision dimensional compliance with DIN 7603 guarantees perfect fit for M28 screws
• High-quality copper construction provides consistent performance and durability
• Optimized thickness range (1.3-1.7mm) offers ideal compression and sealing capabilities
• Standardized metric dimensions ensure compatibility with international assembly requirements

Professional Applications & Engineering Value

This M28 metric copper flat washer delivers exceptional engineering value through its specialized material properties and DIN 7603 standard compliance. The high-purity copper construction addresses critical challenges in electrical systems by providing unmatched electrical conductivity while resisting galvanic corrosion in mixed-metal assemblies. The precisely controlled 28.3mm ID and 35.9mm OD dimensions ensure perfect alignment with M28 fasteners, preventing loosening under vibration. These non-magnetic washers are indispensable in electrical panels, grounding systems, and marine applications where both corrosion resistance and reliable electrical bonding are paramount. The standardized metric sizing streamlines global procurement and inventory management for industrial maintenance teams.

Specification Summary & Compliance

This copper flat washer features precise dimensional tolerances per DIN 7603 standard with internal diameter of 28.3mm, external diameter of 35.9mm, and thickness range of 1.3-1.7mm. Manufactured from high-quality copper material specifically for M28 screw applications, the washer meets international metric system requirements. While hardness is not rated for this electrical-grade component, the product complies with relevant material specifications for copper washers and is suitable for applications requiring RoHS and REACH compliance.