S-92908A622 3.2 mm ID x 12 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating for extended service life in demanding environments
• Precise 100° countersink angle ensures flush mounting with standard countersunk screws for clean, professional finishes
• Optimized dimensional stability with 3.2mm ID and 12mm OD providing secure M3 screw retention and uniform load distribution
• Superior mechanical strength with Rockwell 15N80 hardness rating to withstand high-stress applications without deformation
• Regulatory compliance assurance with RoHS 3 and REACH adherence for safe, environmentally responsible industrial use
• Consistent thickness tolerance (2.2-2.8mm) enables reliable stacking and predictable compression behavior

Professional Applications & Engineering Value

Engineered for precision assembly applications, these M3 metric countersunk washers solve critical challenges in industrial fastening systems. The black-oxide steel construction provides superior corrosion protection in humid or chemically aggressive environments, while the precise 100° countersink angle ensures perfect alignment with standard countersunk screw heads, eliminating protrusions and creating smooth surface profiles. This combination makes them ideal for automotive panels, electronic enclosures, and machinery where both aesthetic finish and long-term reliability are paramount. The controlled thickness variation maintains consistent clamping force across assemblies, preventing joint loosening in vibration-prone applications.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with 3.2mm inner diameter, 12mm outer diameter, and 2.2-2.8mm thickness range. Features Rockwell 15N80 hardness for mechanical durability and complies with RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel, along with full REACH (EC 1907/2006) compliance for hazardous substances management.