S-92908A677 5.3 mm ID x 22 mm OD Finishing Washers
Finishing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide steel coating, ideal for humid or demanding industrial environments
- Precise 100° countersink angle ensures flush mounting with M5 screws, eliminating protrusions and improving safety
- Optimized dimensional stability with 5.3mm ID and 22mm OD for reliable fit and consistent load distribution
- Enhanced durability from Rockwell 15N80 hardness, resisting deformation under high-stress applications
- Regulatory compliance assurance with RoHS 3 and REACH, meeting strict environmental and safety standards
- Versatile thickness range (3.2-3.8mm) accommodates slight variations while maintaining structural integrity
- Cost-effective maintenance through long-lasting material properties, reducing replacement frequency
Professional Applications & Engineering Value
This M5 metric countersunk washer is engineered to address common industrial challenges like fastener loosening, surface damage, and corrosion-induced failures. The black-oxide steel construction provides a protective barrier against oxidation, extending service life in machinery, automotive assemblies, and outdoor equipment. The precise 100° countersink angle aligns perfectly with standard M5 screw heads, distributing clamp load evenly to prevent joint fatigue. Its 22mm OD offers broad bearing surface, reducing stress on soft materials, while the 5.3mm ID ensures snug fit without play. Ideal for precision applications requiring flush finishes, such as conveyor systems, electrical enclosures, and structural frameworks, this washer minimizes maintenance downtime and enhances operational reliability.
Specification Summary & Compliance
Manufactured to metric system standards with an inner diameter of 5.3mm, outer diameter of 22mm, and thickness ranging 3.2-3.8mm. Designed for M5 screw size with a 100° countersink angle and Rockwell 15N80 hardness for consistent performance. Complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel alloys and REACH (EC 1907/2006) regulations, ensuring adherence to global environmental and safety directives.
