Stainless Steel Hex Serrated Flange Spinlock Nut DIN6923 — M3–M12

The DIN6923 stainless steel hex serrated flange spinlock nut is a high-grip variant of the standard flange lock nut, featuring a more aggressive serration pattern that provides enhanced anti-rotation performance in high-vibration environments. The integrated serrated flange eliminates a separate lock washer, reducing part count and assembly time while delivering reliable anti-loosening performance in electronics, automotive, and industrial applications.

Key Specifications

Parameter	Value
Material	304 Stainless Steel
Standard	DIN6923 / ISO 4161
Thread Type	Metric coarse
Size Range	M3, M4, M5, M6, M8, M10, M12
Flange Type	Serrated spinlock (high-grip anti-rotation)
Drive	Hex (spanner / socket)

Why Choose Serrated Flange Spinlock Nuts?

High-grip serration pattern — aggressive serrations provide enhanced anti-rotation performance vs standard flange nuts; ideal for high-vibration environments
Spinlock design — serrations engage immediately on tightening; no additional locking element required
Integrated flange — eliminates separate lock washer; larger bearing surface distributes load and prevents pull-through
304 stainless steel — corrosion-resistant for electronics, outdoor, and industrial applications
DIN6923 standard — compatible with all standard metric coarse thread bolts M3–M12

Typical Applications

High-vibration industrial machinery and equipment fastening (M6–M12)
Automotive chassis, suspension, and drivetrain assembly (M8–M12)
Electronics enclosure and control cabinet assembly (M3–M6)
3D printer and CNC machine frame assembly (M3–M6)
Robotics and drone frame fastening (M3–M6)
HVAC and ventilation equipment mounting (M6–M10)

Compatible With

Standard metric coarse thread bolts and cap screws M3–M12
Spanner / socket: M3=5.5mm, M4=7mm, M5=8mm, M6=10mm, M8=13mm, M10=17mm, M12=19mm AF
Aluminium extrusion T-slot bolts (M3, M4, M5, M6)

Package Contents

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

Frequently Asked Questions

Q: What is a spinlock nut?: A: A spinlock nut is a type of serrated flange nut with an aggressive serration pattern designed to grip the mating surface immediately on tightening, providing high anti-rotation resistance. The term “spinlock” refers to the nut’s resistance to spinning loose under vibration.
Q: How does this differ from a standard DIN6923 flange nut?: A: The spinlock variant has a more aggressive serration geometry that provides higher grip force on the mating surface. It is preferred in high-vibration applications where standard serrated flange nuts may not provide sufficient anti-loosening performance.
Q: Can these be reused?: A: Yes. Unlike nyloc nuts, serrated flange spinlock nuts can be reused multiple times. However, if the mating surface serration marks are worn smooth, the anti-loosening effectiveness may be reduced on subsequent uses.