Cold heading Service

DIN6915 Steel Structural Hex Nuts Manufacturer in China

DIN6915 is a standard specification for high-strength hexagon nuts with a large width across flats. These nuts are often used in heavy-duty applications, such as construction, machinery, and engineering, where strong and secure fastening is required. The DIN 6915 hex nuts are designed to distribute the load and provide better resistance to loosening due to vibrations or dynamic forces. They are typically made from high-strength materials and are used in conjunction with high-strength bolts in various industries.

DIN6915 M20 High Strength Nuts Manufacturer

Specification of DIN6915 Structural Hex Nuts:

Product nameDIN6915 Structural Hex Nuts
ThreadCoarse thread
Manufacturing Processwire drawing, cold heading/hot forging, thread rolling, heat treatment, surface treatment
Surface treatmentBlack Oxide Coating/Zinc Plating (Electroplating)/Hot-Dip Galvanizing/Mechanical Galvanizing/Dacromet Coating/Painting or Powder Coating
Application IndustryConstruction/Machinery/Automotive/Infrastructure/Electrical and Electronics/Furniture/Marine and Offshore

 Mechanical properties DIN6915 Nuts:


Class 10
M5 ≤ D ≤ M16272-353 HV
M16 < D ≤ M39
M5 ≤ D ≤ M16259-336 HV
M16 < D ≤ M39
M5 ≤ D ≤ M1626-36 HRC
M16 < D ≤ M39

Chemical Composition for DIN6915 Nuts:

Material and heat treatmentChemical
composition limits
(cast analysis, %) a
C (max)Mn (min)P (max)S (max)
10Carbon steel (quenched and tempered)0.580.300.0480.058

Surface treatment of DIN6915 Hex Nuts:

Shall apply with regard to hot dip galvanizing refer DIN 267 part 10.

Manufacturing Quality Control of DIN6915 Hex Nuts:

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Control MethodDetail
Material Inspection:Verify the material's composition, heat treatment, and quality upon receipt. Conduct metallurgical analysis to ensure the material properties meet the standards.
Process Control:Implement strict process control measures for heat treatment, machining, threading, and any other manufacturing steps. Maintain consistent process parameters to ensure uniform quality.
Inspection Points:Introduce inspection points at various stages of manufacturing to check for defects, dimensions, and quality. Inspect threading, dimensions, surface finish, and other critical parameters.
Sampling and Testing:Regularly sample products for testing, such as tensile testing, hardness testing, and metallurgical analysis, to ensure they meet the required specifications.
Thread Inspection:Thoroughly inspect threading using proper thread gauges to ensure accurate dimensions and fit with mating components.
Traceability:Implement a traceability system to track each fasteners journey from raw material to final product. This aids in accountability and recalls if necessary.