S-98691A214 4.3 mm ID x 9 mm OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to the nickel-plated brass material, ensuring long-term reliability in harsh industrial environments.
• Precise dimensional fit with a 4.3mm inner diameter designed specifically for M4 screws, reducing installation errors and improving assembly efficiency.
• Enhanced load distribution from the 9mm outer diameter, minimizing surface damage and extending the life of connected components.
• Consistent performance with a controlled thickness range of 0.4-0.6mm, providing reliable spacing and vibration resistance in metric applications.
• Environmental compliance by meeting RoHS 3 and REACH standards, supporting sustainable and safe manufacturing practices.
• Durable brass core offering excellent conductivity and non-magnetic properties, ideal for electrical and specialized industrial uses.

Professional Applications & Engineering Value

This M4 metric flat washer is engineered from nickel-plated brass to address common challenges in industrial settings, such as corrosion and electrical interference. The flat washer design ensures even pressure distribution, preventing loosening under vibration and reducing wear on M4 screw assemblies. Its nickel plating provides a robust barrier against moisture and chemicals, making it suitable for automotive, electronics, and machinery applications where corrosion resistance is critical. By integrating precise metric dimensions (4.3mm ID, 9mm OD) and a consistent thickness, it streamlines maintenance and enhances the durability of equipment, delivering reliable performance in demanding environments.

Specification Summary & Compliance

This washer features a 4.3mm inner diameter, 9mm outer diameter, and 0.4-0.6mm thickness, adhering to standard metric sizing for M4 screws. It is manufactured from nickel-plated brass and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry acceptance.