S-91635A210 4.3 mm ID x 9 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass material, ensuring long-term reliability in harsh environments
• Precise dimensional accuracy with 4.3mm ID and 9mm OD for perfect fit with M4 screws, eliminating installation issues
• Non-magnetic properties making these washers ideal for sensitive electrical and electronic applications
• International standard compliance with DIN 125 and ISO 7089 specifications, guaranteeing interchangeability and quality
• Environmental safety assurance through RoHS 3 compliance, meeting strict regulatory requirements
• Optimal thickness range of 0.7-0.9mm providing reliable load distribution without adding unnecessary bulk
• Excellent electrical conductivity characteristic of brass, beneficial for grounding and electrical connection applications

Professional Applications & Engineering Value

These M4 brass flat washers deliver exceptional engineering value by solving critical industrial challenges. The brass material provides inherent corrosion resistance that prevents degradation in humid or chemically aggressive environments, significantly extending component lifespan. The precise metric dimensions and DIN 125/ISO 7089 certification ensure perfect compatibility with M4 screws in international projects, eliminating fitment issues that cause assembly delays. Particularly valuable in electrical applications, the non-magnetic properties prevent interference with sensitive equipment while the material's conductivity supports reliable electrical connections. The controlled 0.7-0.9mm thickness provides optimal load distribution without compromising space constraints in compact assemblies.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 4.3mm inner diameter, 9mm outer diameter, and thickness ranging from 0.7-0.9mm, specifically designed for M4 screw size applications. Manufactured in compliance with DIN 125 and ISO 7089 international standards, ensuring dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) compliant, meeting current environmental safety regulations for restricted substances.