DIN6915 High Strength Hex Nuts
DIN 6915 High Strength Hex Nuts are structural fastening nuts in property class 10, designed for use with DIN 6914 high-strength bolts in preloaded bolted connections. The heavy hexagonal profile provides sufficient wrench engagement for tightening, while the metric internal thread is matched to the corresponding bolt size.
Available in M12 to M64, DIN 6915 nuts are designed for structural assemblies where the nut, bolt, and washer need to work together as a compatible fastening system. The increased hexagonal profile provides the necessary dimensions for high-strength structural bolting applications while maintaining practical access for installation and tightening. DIN 6915 High Strength Hex Nuts are commonly used in structural steelwork, fabricated steel structures, industrial equipment frames, bridges, and other load-bearing bolted assemblies. They can be matched with DIN 6914 bolts and DIN 6916 washers to form a complete structural fastening assembly.
Specification:
| Item | Specification |
|---|---|
| Standard | DIN6915 |
| Product Type | High-Strength Structural Hex Nut |
| Diameter | M12-M64 |
| Thread Pitch | Metric Coarse |
| Class | 10 |
| Material | C45 |
| Surface treatment | Black Oxide, Hot-Dip Galvanizing,Dacromet |
| Matching Bolt | DIN6914 |
| Matching Washer | DIN6916 |
Mechanical properties DIN6915 Nuts:
| Thread D | Class 10 |
|---|---|
| M5 ≤ D ≤ M16 | 272-353 HV |
| M16 < D ≤ M39 | |
| M5 ≤ D ≤ M16 | 259-336 HV |
| M16 < D ≤ M39 | |
| M5 ≤ D ≤ M16 | 26-36 HRC |
| M16 < D ≤ M39 |
Chemical Composition for DIN6915 Nuts:
| Property class | Material and heat treatment | C (max) | Mn (min) | P (max) | S (max) |
|---|---|---|---|---|---|
| 10 | Carbon steel (quenched and tempered) | 0.58 | 0.30 | 0.048 | 0.058 |
Application of DIN6915 Hex Nuts:
DIN 6915 High Strength Hex Nuts are used with matching high-strength structural bolts to secure preloaded bolted joints. Their property class 10 and heavy hexagonal profile make them suitable for structural connections where the nut and bolt need to work as a matched fastening system.
Structural Steelwork
DIN 6915 nuts are commonly used in steel columns, beams, trusses, frames, steel platforms, and fabricated steel structures. They can be paired with DIN 6914 bolts and DIN 6916 washers to form structural bolting assemblies.
Industrial Structures and Equipment
These nuts are suitable for industrial equipment frames, support structures, machinery bases, steel platforms, and heavy fabricated assemblies where high-strength bolted connections are required. The M12–M64 size range accommodates different connection dimensions and load requirements.
Bridges and Heavy-Duty Steel Assemblies
DIN 6915 nuts can also be used in bridge steelwork, infrastructure structures, large steel fabrications, and other load-bearing assemblies where preloaded structural connections are specified. The nut should be installed together with the appropriate bolt and washer according to the applicable engineering and installation requirements.