Metric Class 8.8 Hex Serrated Flange Locknut DIN 6923 Clear Zinc Cr3 Plating
Metric Class 8.8 Hex Serrated Flange Locknut – DIN 6923 Strength with Vibration Resistance
The Metric Class 8.8 Hex Serrated Flange Locknut compliant with DIN 6923 is a high-performance fastening solution engineered for mechanical, automotive, and structural applications where strength and resistance to loosening are critical. This all-in-one fastener combines a traditional hex nut with an integrated serrated flange, eliminating the need for a separate washer while delivering superior holding power under vibration and dynamic loads.
High-Strength Class 8.8 Steel Construction
Manufactured from medium carbon steel, these locknuts meet Class 8.8 mechanical requirements, offering an approximate 800 MPa tensile strength and 640 MPa yield strength. This makes them well-suited for demanding applications that require durability, load-bearing capability, and long service life. The strength of Class 8.8 steel ensures consistent performance in both static and dynamic assemblies.
Serrated Flange Locking Design
The serrated flange on the bearing surface is designed to bite into the mating material during tightening. This creates a mechanical locking action that resists rotation and prevents loosening caused by vibration, movement, or torque cycling. The wide flange also helps distribute clamping force evenly, reducing surface damage and improving joint integrity.
DIN 6923 Standard Compliance
Compliance with DIN 6923 ensures uniform dimensions, reliable mechanical properties, and compatibility with standard metric bolts. This international standard provides confidence for engineers, manufacturers, and maintenance teams working across global supply chains.
Clear Zinc Cr3 Corrosion Protection
Finished with Clear Zinc Cr3 (trivalent chromium) plating, these locknuts offer effective protection against rust and oxidation while maintaining a clean, professional appearance. The Cr3 coating is RoHS-compliant, making it a safer and more environmentally responsible alternative to hexavalent chromium finishes. It performs well in indoor and moderately corrosive outdoor environments.
Common Applications
Metric Class 8.8 hex serrated flange locknuts are widely used in automotive assemblies, industrial machinery, construction equipment, structural frameworks, and general mechanical systems where vibration resistance and strength are essential.
A Reliable Metric Locking Solution
For secure, long-lasting fastening, the DIN 6923 Class 8.8 hex serrated flange locknut with clear zinc Cr3 plating delivers strength, corrosion resistance, and confidence in demanding environments.