Hexagon head self-drilling screws are essential fasteners in modern construction and metalworking. When sourcing or manufacturing these components, the serves as the global benchmark for quality, dimensions, and performance.

The most common material. It offers high tensile strength and a hardened tip capable of drilling through structural steel.

Specifically denotes the hexagon head with a flange (washer head).

When looking for the document, use keywords like "DIN 7504-K PDF download," "DIN 7504-K technical specifications," or "ISO 15480 standard pdf." Summary of DIN 7504 K Specifications Specification DIN 7504 K / ISO 15480 Type Self-Drilling Hex Washer Head Material Case-Hardened Steel Typical Hardness Finish Zinc Plated (Blue/White) Common Sizes ST2.9 - ST6.3

DIN 7504 K specifies requirements for hexagon head self-drilling screws with a tapping screw thread and a flange (integral washer)

Hex head for high torque application, integrated flange for increased bearing surface, and a self-drilling point designed to penetrate metal. 2. Technical Specifications and Dimensions

Enter the . This German industrial standard (Deutsches Institut für Normung) specifies a specific type of self-tapping screw designed for use in metals. If you are an engineer, a production manager, or a maintenance technician working with thin sheets of steel, aluminum, or non-ferrous metals, you have likely searched for the DIN 7504 K standard PDF to understand its dimensional requirements, mechanical properties, and application guidelines.

The specifies the dimensional and technical requirements for hexagon head self-drilling screws with a collar (or flange) . Engineered to drastically cut down assembly times, these fasteners combine drilling, tapping, and fastening into a single operation, entirely eliminating the need for pre-drilled pilot holes.

To further enhance durability and performance, a variety of surface coatings are applied, including:

Unlike thread-cutting screws (which remove material), DIN 7504 K screws form threads by displacing material. This process preserves the material’s continuous fiber structure, resulting in superior resistance to vibration and stripping. This paper explores the technical specifications of the DIN 7504 K standard, the mechanics of its application, and its relevance in modern manufacturing contexts.

If you are sourcing these fasteners for a project, I can help you locate reputable suppliers or calculate load requirements. Let me know: What are you drilling into? Do you need carbon steel or stainless steel (Bi-Metal) ?

| Thread Size (mm) | Pitch (P) | Head Height (k) max/min (mm) | Flange Diameter (dc) max/min (mm) | Width Across Flats (s) max/min (mm) | Drilling Capacity (dp) max (mm) | | :--- | :--- | :--- | :--- | :--- | :--- | | ST 2.9 | 1.1 | 2.8 / 2.5 | 6.3 / 5.8 | 4.0 / 3.82 | 2.3 | | ST 3.5 | 1.3 | 3.4 / 3.0 | 8.3 / 7.6 | 5.50 / 5.32 | 2.8 | | ST 3.9 | 1.3 | 3.4 / 3.0 | 8.3 / 7.6 | 5.50 / 5.32 | 3.1 | | ST 4.2 | 1.4 | 4.1 / 3.6 | 8.8 / 8.1 | 7.0 / 6.78 | 3.6 | | ST 4.8 | 1.6 | 4.3 / 3.8 | 10.5 / 9.8 | 8.0 / 7.78 | 4.1 | | ST 5.5 | 1.8 | 5.4 / 4.8 | 11.0 / 10.0 | 8.0 / 7.78 | 4.8 | | ST 6.3 | 1.8 | 5.9 / 5.3 | 13.5 / 12.2 | 10.0 / 9.78 | 5.8 |

The "K" variant specifically designates a (hex washer head). This integrated washer distributes the clamping load across a wider surface area, protecting the fastened material from damage and preventing pull-through. Standard Dimensional Parameters

Because of its unique thread-forming ability in thin metal, the DIN 7504 K screw is found in:

If you are looking for specific material options (e.g., A2 or A4 stainless steel), this technical data sheet provides information on DIN 7504 K (A4) stainless steel screws.

For precise engineering work, you can find official versions of the DIN 7504 K standard through technical publishers like Beuth Verlag or various industrial fastener suppliers who provide PDF technical data sheets based on these standards.