Because of its unique thread-forming ability in thin metal, the DIN 7504 K screw is found in:
A2 or A4 grades, primarily used for fastening into aluminum or thin stainless sheets. Usually surface hardened to approximately to ensure drilling capability. www.indexfix.com Dimensions Table (Nominal Values)
If you are in construction or heavy metal fabrication, you have likely encountered the term DIN 7504 K
When reviewing a DIN 7504 K technical data sheet, you will encounter several standardized variables: din 7504 k standard pdf
A critical parameter detailed in the DIN 7504 K technical PDF is the . This dictates the total thickness of the steel plates the screw can successfully pierce in a single operation.
Dictates the size of the socket or nut setter needed for installation.
: These screws typically feature a "drill point" tip capable of piercing sheet metal or heavy profiles up to several millimetres thick without prep. Technical Specifications & Dimensions According to manufacturers like INDEX A Perfect Fixing Aspen Fasteners , the standard covers a specific range of metric sizes: Nominal Diameter ( Head Thickness ( Spanner Size ( Max Drilling Capacity Data compiled from CELO Fixings Materials and Coatings Because of its unique thread-forming ability in thin
Corrosion resistance is crucial for maintaining structural integrity over time. DIN 7504 K screws are available in several surface treatments:
How to verify the screw’s ability to form a thread in a standardized test plate (usually 6 mm thick with a specific hole diameter).
Most commonly (Galvanized) for corrosion resistance. Mechanical Properties This dictates the total thickness of the steel
The standard refers to high-performance self-drilling screws designed with a hexagon washer head (often called a hex flange head). These screws are engineered to drill their own pilot hole, tap threads, and fasten materials in a single operation, significantly reducing installation time in industrial, construction, and manufacturing applications.
Measured from the base of the flange to the top of the hex head.
The integral flange or accompanying washer increases the bearing surface, distributing the load over a wider area, which is crucial for fastening thinner materials without damaging them. Technical Specifications and Dimensions (DIN 7504 K)
(Pack of 500 pcs) DIN 7504-K Zinc Plated Steel 4.8 x 60 mm Self-Drilling Screws With EPDM Washers, Hex Washer Head, Sheet Metal Screw, Self Tapping (5
| Feature | Benefit | |---------|---------| | No pre-tapping | Saves 30-50% assembly time | | No cutting chips | Eliminates cleaning operations | | High strip-to-drive ratio | Reliable torque control | | Reusable (limited times) | Standard allows for 2-3 reuses |