Use a power screwdriver equipped with a torque-limiting clutch or a depth-sensitive nosepiece. Impact drivers are not recommended as they can shear the head.
Not recommended. The standard is for metal. The thread geometry is too aggressive for most plastics and will cause stress cracking.
The DIN 7504 K standard is an important standard for bolted connections with hexagon head bolts and nuts. The standard specifies requirements for design, materials, tightening, inspection, and testing. Its application helps ensure the safety, reliability, and interchangeability of bolted connections. The standard is available in PDF format from various sources.
Equipped with a specialized self-drilling tip (drill point) that eliminates the need for pre-drilling or punching holes.
Thanks to their high clamping force, heavy-duty drive profile, and integrated washer, DIN 7504 K screws are highly favored in industrial and structural engineering. din 7504 k standard pdf
The DIN 7504 K standard PDF typically includes:
Securing metal sheets to purlins.
Provides standard indoor corrosion protection.
Utilizes a spacing thread style common to sheet metal screws (Tapping screw thread according to DIN EN ISO 1478). Coating and Surface Finish Options Use a power screwdriver equipped with a torque-limiting
Both define hexagon washer head self-drilling screws with the same technical parameters. Applications and Benefits
Total length measured from under the collar to the end of the drill point. Common Thread Sizes and Tooling Profiles: Thread Size (ST) Width Across Flats (s) Max Head Height (k) Max Collar Diameter (dc) ST 3.5 ST 4.2 ST 4.8 ST 5.5 ST 6.3 Material and Mechanical Properties
Standard nominal diameters range from ST 2.9 to ST 6.3.
Fastening corrugated or trapezoidal metal sheets to building frames. 2. Key Technical Specifications and Dimensions The standard is for metal
Varies from 2.0 mm for smaller diameters up to 6.0 mm for ST 6.3 screws.
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) ?
If you need to access the full text of the DIN 7504 K standard, you can download it from the DIN website or purchase a PDF copy from a reputable standards distributor.
DIN 7504 K Standard: Self-Drilling Hex Washer Head Screws Technical Guide 1. What is the DIN 7504 K Standard?
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The "K" in DIN 7504 refers to the specific head style: a . This design provides a larger bearing surface, which distributes the clamping force more evenly and reduces the risk of damaging the fastened material. Dimensional Details