S-92538A171 3.2 mm ID x 12 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Flush surface mounting with 90° countersink angle for seamless integration and improved aesthetics in assembled products
• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Optimized load distribution with precise 12mm outer diameter, preventing surface damage and maintaining joint integrity
• Consistent performance guaranteed by Rockwell B83 hardness, providing excellent durability under repeated stress
• Perfect M3 screw compatibility with 3.2mm inner diameter, ensuring secure fastening without slippage
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Reliable thickness tolerance (2.2-2.8mm) for predictable compression and consistent installation results

Professional Applications & Engineering Value

These M3 metric countersunk washers solve critical engineering challenges in industrial applications where flush mounting and corrosion resistance are paramount. The 18-8 stainless steel composition provides exceptional protection against rust and chemical degradation, making them ideal for marine equipment, food processing machinery, and outdoor industrial installations. The precise 90° countersink angle ensures perfect alignment with corresponding screw heads, eliminating protrusions that could interfere with moving parts or create safety hazards. With their Rockwell B83 hardness, these washers maintain dimensional stability under vibration and load cycling, preventing joint loosening in automotive assemblies, electronic enclosures, and precision mechanical systems. The combination of metric dimensions and corrosion-resistant properties makes them particularly valuable for international equipment manufacturers requiring reliable fastening solutions that withstand demanding operational conditions.

Specification Summary & Compliance

This M3 countersunk washer features metric dimensions with 3.2mm inner diameter, 12mm outer diameter, and thickness ranging 2.2-2.8mm. Manufactured from 18-8 stainless steel with Rockwell B83 hardness rating, the washer is engineered to ISO metric standards with precise countersink geometry. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.