S-97725A326 42.3 mm ID x 48.9 mm OD DIN 7603 Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior electrical conductivity for reliable current transfer in electrical assemblies
• Enhanced thermal management through cellulose-filled copper construction for heat dissipation
• Excellent corrosion resistance ensuring long-term performance in harsh industrial environments
• Precise dimensional fit with 42.3mm ID and 48.9mm OD for secure M42 screw applications
• Standardized compliance with DIN 7603 specifications for consistent quality and interchangeability
• Environmentally responsible manufacturing with full RoHS 3 (2015/863/EU) compliance
• Optimized load distribution with 2.3-2.7mm thickness range for even pressure spreading

Professional Applications & Engineering Value

These cellulose-filled copper flat washers provide critical solutions for electrical grounding systems and thermal management applications where standard steel washers would fail. The unique cellulose-filled copper material combines excellent electrical conductivity with improved structural integrity, preventing galvanic corrosion when mating with dissimilar metals. Engineered to DIN 7603 standards, these metric washers maintain precise dimensional tolerances for M42 fasteners, ensuring proper fit and consistent performance in industrial electrical panels, power distribution equipment, and high-temperature assemblies. The copper composition naturally resists oxidation while the cellulose filler enhances durability, making them ideal for demanding environments where both electrical performance and mechanical reliability are paramount.

Specification Summary & Compliance

This M42 metric flat washer features precise dimensions of 42.3mm internal diameter and 48.9mm outer diameter with thickness ranging 2.3-2.7mm. Manufactured in compliance with DIN 7603 standards for dimensional accuracy and quality assurance. The product is fully RoHS 3 (2015/863/EU) compliant, meeting environmental regulations for hazardous substance restrictions. Designed specifically for M42 screw sizes with cellulose-filled copper material that provides both electrical and thermal conductivity while maintaining mechanical integrity in industrial applications.