Stainless Steel Hex Flange Lock Nut DIN6923 — M3–M12 Serrated Hexagon Nut

DIN6923 stainless steel hex flange serrated lock nuts combine a standard hex nut with an integrated serrated flange washer that bites into the mating surface under torque, providing superior vibration resistance without a separate lock washer. The stainless steel construction ensures corrosion resistance for electronics, outdoor equipment, and industrial machinery.

Key Specifications

Parameter	Value
Material	304 Stainless Steel
Standard	DIN6923 / ISO 4161
Thread Type	Metric coarse (standard pitch)
Size Range	M3, M4, M5, M6, M8, M10, M12
Flange	Integrated serrated (anti-loosening)
Drive	Hex (spanner / socket)

Why Choose DIN6923 Serrated Flange Lock Nuts?

Integrated serrated flange — eliminates separate lock washer; serrations bite into mating surface to resist loosening under vibration and dynamic loads
No separate washer needed — flange distributes load and provides anti-rotation in a single component; reduces assembly time and part count
Stainless steel — corrosion-resistant for electronics enclosures, outdoor equipment, and industrial machinery
DIN6923 / ISO 4161 standard — internationally specified; compatible with all standard metric bolts and studs
M3–M12 range — covers electronics (M3–M5) through structural mechanical assembly (M8–M12)

Typical Applications

Electronics enclosure and control cabinet assembly (M3–M6)
Automotive and motorcycle component fastening (M6–M12)
3D printer frame and aluminium extrusion assembly (M3–M5)
Robotics chassis and servo bracket mounting (M3–M6)
Industrial machinery and vibrating equipment fastening (M6–M12)
HVAC ductwork and panel mounting (M6–M10)

Compatible With

Standard metric bolts and cap screws M3–M12 (coarse pitch)
Spanner / open-end wrench: M3=5.5mm, M4=7mm, M5=8mm, M6=10mm, M8=13mm, M10=17mm, M12=19mm AF
Socket sets: same AF sizes as above
Aluminium extrusion T-slot bolts (M3, M4, M5, M6)

Package Contents

DIN6923 hex flange lock nuts in selected size and quantity (per variant)

Frequently Asked Questions

Q: How do serrated flange nuts prevent loosening?: A: The serrated (toothed) flange bites into the mating surface (metal panel, bracket, or washer) when the nut is tightened. The serrations create a mechanical interlock that resists rotation under vibration, similar to a lock washer but integrated into the nut itself.
Q: Can serrated flange nuts be reused?: A: Yes, unlike nyloc nuts which lose effectiveness after one use, serrated flange nuts can be reused multiple times. However, if the mating surface is severely marked by the serrations, the anti-loosening effectiveness may be reduced on reuse.
Q: What is the difference between DIN6923 and a standard hex nut with a lock washer?: A: DIN6923 combines the nut and serrated lock washer into a single component, reducing part count, assembly time, and the risk of forgetting the washer. The integrated design also ensures the serrations are always correctly positioned relative to the nut.