M4 Hex Flange Serratted Nut – DIN 6923 (Class 8, Bright Zinc Plated)

Hex Flange Lock Nut – DIN 6923 (Class 8, Bright Zinc Plated)

These nuts combine a standard hex nut with a wide, serrated flange to deliver a secure, vibration resistant fastening in one piece. The flange acts like a built-in washer, spreading the load over a larger area and reducing the need for a separate washer, while the serrated face bites into the mating surface to resist loosening under vibration. Made from Class 8 alloy steel with a CR+3 zinc plating, they offer high strength and good corrosion resistance. DIN 6923 nuts are most commonly used with coarse pitch metric bolts in automotive, machinery and construction applications where a reliable lock and even load distribution are critical.

Key Points

• Integrated flange: Distributes pressure evenly and eliminates the need for a separate washer.
• Serrated locking surface: Provides extra grip, helping prevent loosening due to vibration.
• Class 8 steel with BZP coating: Delivers high strength and corrosion resistance.
• Metric coarse threads: Compatible with common bolt sizes (typically M4–M16).
• Ideal for demanding applications: Used in automotive assemblies, machinery, and structural joints where a secure, vibration resistant fastening is essential.