Flat countersunk head socket drive screws, as defined in the DIN 7972 standard published by the German Institute for Standardization (DIN), are thread-forming screws that create their own threads in the substrate they are driven into, and are generally made of thin metal . The flat countersunk head has a 90-degree countersink so that the head can be flush with the surface of the substrate when fully inserted. Socket drive screws accept a single-ended screwdriver, ideal for simple manual applications. These screws are used with pre-drilled, punched, or socketed pilot holes in sheet metal or other solid materials.
-basli-kilavuz-vidalar.jpg "DIN 7972 Countersunk Head Slotted Self Tapping Screw - ISO 1482 Slotted Countersunk (Flat) Head Tap Screws")
Similarly, the ISO 1482 standard, published by the International Organization for Standardization (ISO), describes the specifications of countersunk (flat) head tapping screws with thread sizes from ST 2,2 to ST 9,5 (ISO 1482 Countersunk (flat) head tapping screws).
In the DIN 7972 standard, the requirements for flat countersunk slotted self-tapping screws are listed under the following headings:
Steel or stainless steel is used in the production of such washers. Austenitic steel is a type of austenitic stainless steel. It contains a high percentage of nickel and chromium and provides great strength and corrosion resistance.
The use of austenitic group stainless steel is as follows:
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services for flat countersunk slotted self-tapping screws, within the scope of DIN 7972 standard, with its trained and expert staff and advanced technological equipment.
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