S-97725A126 30.3 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, reducing the risk of connection failures.
• Excellent corrosion resistance from high-quality copper material extends service life in humid or chemically aggressive environments.
• Precise dimensional accuracy with 30.3mm ID and 35.9mm OD guarantees a perfect fit for M30 screws, preventing loosening and misalignment.
• DIN 7603 compliance assures consistent quality and interchangeability in metric-based industrial applications.
• Durable copper construction provides long-lasting performance under repeated load and thermal cycling.
• Versatile sealing capability in plumbing and fluid systems helps prevent leaks at threaded connections.
• Easy installation and removal due to standardized flat profile and smooth surface finish.

Professional Applications & Engineering Value

This M30 metric copper flat washer is engineered to address critical challenges in electrical and mechanical systems. The high-purity copper material offers exceptional electrical conductivity, making it ideal for grounding applications, busbars, and electrical panels where minimizing resistance is paramount. Its inherent corrosion resistance ensures reliability in plumbing, HVAC, and marine environments, preventing galvanic corrosion and seal degradation. The flat washer design conforms to DIN 7603 standards, providing a uniform load distribution that protects surfaces from damage and maintains bolt preload. By specifying this washer, engineers enhance system integrity, reduce maintenance frequency, and ensure compliance with international metric hardware specifications.

Specification Summary & Compliance

This washer meets DIN 7603 specifications, with an inner diameter of 30.3mm, outer diameter of 35.9mm, and thickness ranging from 1.8mm to 2.2mm, ensuring precise fit for M30 screw sizes. Manufactured from high-quality copper material, it is suitable for applications requiring reliable electrical and thermal performance. The product conforms to industry standards for dimensional accuracy and is free from hazardous substances, supporting compliance with RoHS and REACH directives for environmental safety.