What Is a DIN 6923 Hex Flange Nut?
DIN 6923 Hex Flange Nuts
ISO Equivalent: ISO 4161 | Serrated & Non-Serrated Flange Nuts
DIN 6923 defines hexagon nuts with an integrated flange that distributes load across a wider area than standard nuts. Available with or without serrations, these nuts eliminate the need for separate washers while providing improved holding power.
Quick Specifications
Type
Hex Flange
Flange Options
Smooth / Serrated
Size Range
M5 – M20
Property Class
8, 10
ISO Equivalent
ISO 4161
Dimension Chart
| Size | Pitch (mm) | Wrench Size | Flange Dia. | Height |
|---|---|---|---|---|
| M5 | 0.8 | 8 mm | 11.8 mm | 5.0 mm |
| M6 | 1.0 | 10 mm | 14.2 mm | 6.0 mm |
| M8 | 1.25 | 13 mm | 17.9 mm | 8.0 mm |
| M10 | 1.5 | 15 mm | 21.8 mm | 10.0 mm |
| M12 | 1.75 | 18 mm | 26.0 mm | 12.0 mm |
| M16 | 2.0 | 24 mm | 34.5 mm | 16.0 mm |
Serrated vs Non-Serrated
✓ Serrated Flange
- Better grip on painted surfaces
- Increased vibration resistance
- Ideal for automotive/machinery
- May mar soft surfaces
â—‹ Non-Serrated (Smooth)
- Won't damage finished surfaces
- Easier adjustment/removal
- Better for aluminum
- Cleaner appearance
💡 DIN 6923 vs ISO 4161
Fully interchangeable — Both standards define hex flange nuts with identical dimensions. Use with DIN 6921 flange bolts for washer-free assemblies.
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Integrated flange eliminates washers. Serrated and smooth options available.
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