S-98472A350 6.4 mm ID x 18 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Flush surface mounting with 90° countersink angle for seamless integration in M6 applications, eliminating protrusions and improving safety
• Superior corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Optimal load distribution with 18mm outer diameter, reducing surface pressure and preventing material damage
• Precision dimensional fit with 6.4mm inner diameter, providing secure fastening with M6 screws without play
• Compliance with DIN 6797 standard for consistent quality and interchangeability in metric assemblies
• Environmental regulation adherence with RoHS 3 and REACH compliance, meeting global manufacturing requirements
• Versatile industrial application due to standardized metric sizing and durable stainless steel material

Professional Applications & Engineering Value

This M6 metric countersunk washer solves critical engineering challenges in industrial assembly where flush mounting is essential. The 18-8 stainless steel material provides excellent corrosion resistance for applications exposed to moisture, chemicals, or outdoor elements, while the 90° countersink angle ensures screw heads sit perfectly flush with surfaces - eliminating snag points in machinery, improving aerodynamic profiles, and enhancing workplace safety. The combination of 6.4mm ID and 18mm OD creates optimal bearing surface area, distributing clamp load effectively to prevent surface damage in softer materials. These metric flat washers are particularly valuable in automotive, electronics, and machinery applications where precision flush mounting and reliable performance under vibration are critical requirements.

Specification Summary & Compliance

This countersunk washer features precise dimensional specifications including 6.4mm inner diameter, 18mm outer diameter, and 3.3mm overall height, engineered to DIN 6797 standard for metric washers. The component maintains manufacturing consistency and dimensional accuracy suitable for industrial applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and material safety, with verification of compliance with 235 SVHC substances as of June 14, 2023. The 18-8 stainless steel construction provides inherent durability without requiring additional hardness rating for most industrial fastening applications.