S-91635A170 2.2 mm ID x 5 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 humid or chemically aggressive environments
• Excellent electrical conductivity for reliable grounding and electrical applications where insulation is not required
• Precision dimensional compliance with DIN 125 and ISO 7089 standards guarantees perfect fit with M2 screws and consistent performance
• Optimal load distribution with 5mm outer diameter protecting sensitive surfaces from damage during fastener tightening
• Space-saving thin profile (0.2-0.4mm thickness) ideal for compact assemblies with limited clearance requirements
• Environmental compliance assurance with RoHS 3 certification for use in regulated industries and international markets
• Enhanced durability through brass's natural anti-galling properties, reducing friction and thread wear during installation

Professional Applications & Engineering Value

These M2 metric brass flat washers deliver critical engineering solutions where electrical conductivity and corrosion resistance are paramount. The brass construction prevents galvanic corrosion when used with compatible fasteners, while the precise 2.2mm inner diameter ensures secure seating on M2 screws without play or misalignment. Engineers specify these DIN 125 and ISO 7089 compliant washers for electronics assembly, instrumentation, and precision mechanical systems where their thin profile (0.2-0.4mm) accommodates space-constrained designs. The combination of material properties and dimensional accuracy addresses common industrial challenges including electrical grounding requirements, marine environment exposure, and vibration-induced loosening in sensitive equipment.

Specification Summary & Compliance

Manufactured to DIN 125 and ISO 7089 dimensional standards with 2.2mm inner diameter, 5mm outer diameter, and 0.2-0.4mm thickness range. These metric flat washers comply with RoHS 3 (2015/863/EU) environmental directives and are specifically engineered for use with M2 screw sizes. The brass material provides consistent performance across temperature variations while maintaining dimensional stability under load.