S-91635A370 1.7 mm ID x 4 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass construction ensures long-term reliability in harsh environments and electrical applications
• Precision dimensional accuracy with 1.7mm ID and 4mm OD provides perfect fit for M1.6 screws in miniature assemblies
• Ultra-thin profile (0.2-0.4mm thickness) enables space-saving installations in compact electronic and mechanical designs
• Dual-standard certification to DIN 125 and ISO 7089 guarantees consistent quality and international compatibility
• RoHS 3 compliance with exemption ensures environmental safety while maintaining optimal copper alloy performance
• Excellent electrical conductivity makes these washers ideal for grounding and electrical connection applications
• Non-magnetic properties prevent interference in sensitive electronic equipment and instrumentation

Professional Applications & Engineering Value

These M1.6 metric brass flat washers deliver exceptional engineering value in precision applications where corrosion resistance and reliable performance are critical. The brass material provides inherent protection against oxidation and galvanic corrosion, making these DIN 125 and ISO 7089 certified washers perfect for electrical connectors, miniature mechanical assemblies, and electronic devices. Their precise dimensions (1.7mm ID x 4mm OD) ensure secure fastening without loosening, while the thin profile maximizes space efficiency in compact designs. The copper alloy composition offers excellent conductivity for grounding applications, solving common challenges in electrical assemblies where both mechanical support and electrical performance are required.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 1.7mm inner diameter, 4mm outer diameter, and 0.2-0.4mm thickness range, engineered for M1.6 screw sizes. Manufactured to DIN 125 and ISO 7089 standards ensuring dimensional accuracy and performance consistency. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(c) for lead in copper alloy, meeting international environmental regulations while maintaining optimal material properties for industrial applications.