
DIN 6915 Heavy Hex Nuts
DIN 6915 specifies heavy hex nuts with large widths across flats, designed for high-strength structural bolting applications. These nuts are intended for use with high-strength bolts in steel structures requiring friction-grip and shear connections.
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Product introduction
DIN 6915 specifies heavy hex nuts with large widths across flats, designed for high-strength structural bolting applications. These nuts are intended for use with high-strength bolts in steel structures requiring friction-grip and shear connections.
Common Specifications
| Materials | Carbon steel |
| Class | 2H |
| Range | M12 – M30 |
| Thread | Coarse , Fine, Extra Fine, Special-Fine |
| Surface | Plain, zinc plated, hot-dip galvanized, GEOMET, ZINC-NICKLE, DACROMATE etc. |

Key Features
- Large width across flats reduces bearing pressure
- Increased thickness for enhanced thread engagement
- Designed for high-strength structural bolting
- Conforms to DIN 6915 specifications

Application industry
- Steel structure construction
- Wind turbine towers
- Heavy steel frameworks
- Crane runway systems
data table

| Size | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
| Coase | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
| Fine | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 3 | 3 |
| Extra Fine | 1.25 | 1 | 1.5 | 1.5 | 1.5 | 1.5 | 2 | - |
| s Min (mm) | 21.16 | 26.16 | 31 | 35 | 40 | 45 | 49 | 58.8 |
| s Max (mm) | 22.00 | 27.00 | 32.00 | 36.00 | 41.00 | 46.00 | 50.00 | 60.00 |
| e Min (mm) | 23.91 | 29.56 | 35.03 | 39.55 | 45.20 | 50.85 | 55.37 | 66.44 |
| m Min (mm) | 9.64 | 12.30 | 14.90 | 16.90 | 18.70 | 20.70 | 22.70 | 27.70 |
| m Max (mm) | 10.00 | 13.00 | 16.00 | 18.00 | 20.00 | 22.00 | 24.00 | 29.00 |
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