Cross-recessed flat countersunk self-tapping sheet metal screws defined in the DIN 7982 standard published by the German Institute for Standardization (DIN) are designed to thread pre-drilled untapped holes of the substrate into which they are screwed. Recommended pilot hole sizes vary depending on the diameter of the screw to be used and the thickness of the backing material. These screws are manufactured from zinc plated steel and stainless steel. Cross countersunk flat countersunk head self-tapping sheet metal screws are fully threaded with a coarse thread and a rib point. It is recommended to be used in thin sheet metal, resin plywood and composite materials. The flat head is ideal for locations where the head will be flush with the substrate when fully seated. The flat head has an 80 degree countersunk.
-basli-kilavuz-vidalar.jpg "DIN 7982 Cross Flush Countersunk Head Self Tapping Sheet Metal Screws - ISO 7050 Cross Flush Countersunk (Flat) Head Tap Screws")
Similarly, the ISO 7050 standard published by the International Standards Organization (ISO) describes the characteristics of cross countersunk (flat) head tapping screws with thread sizes from ST 2,2 to ST 9,5 (ISO 7050 Cross countersunk countersunk). head (flat) head lead screws).
In the DIN 7982 standard, the requirements for such screws are under the following headings:
In short, cross-recessed head screws are threaded fittings with a coarse-threaded and cross-recessed drive head. These types of screws are used to fasten objects to thin metal, wood, or plastic.
Among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, our organization, with its trained and expert staff and advanced technological equipment, within the scope of DIN 7982 standard, for cross-flush countersunk head self-tapping sheet metal screws and within the scope of ISO 7050 standard, also provides testing services for cross countersunk (flat) head lead screws.
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