Metric slotted driven flat countersunk head machine screws as defined in the DIN 963 standard published by the German Institute for Standardization (DIN) are designed for metal-to-metal applications that require a pre-drilled hole and a matching metric nut to screw in the screw. These screws are usually fully threaded with machine threads and a blind spot. Recommended pre-drilled hole sizes vary depending on the diameter of the screw to be used, but should be slightly larger in diameter than the main (maximum) thread diameter. These screws are manufactured from zinc plated steel and stainless steel.
Metric flat countersunk head screws have a cone-shaped bearing surface with a flat top surface and a head angle of approximately 90 degrees. They are used for applications where the head needs to be flush with the mating surface of the substrate. Fluted-drive flat countersunk machine screws are generally manufactured from zinc-plated steel and stainless steel, in sizes M1 to M20, with diameters up to 100 mm in length.
Similarly, in the ISO 2009 standard published by the International Standards Organization (ISO), the characteristics of slotted countersunk flat head screws with product class A and threads from M1,6 to M10 are described (ISO 2009 Slotted countersunk head flat head screws - Product class A).
Another standard in this regard is the following standard published by the British Standards Institute (BSI): BS 3692 ISO Metric precision hex bolts, screws and nuts, specification.
Our organization, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of DIN 963 standard, for slotted flat countersunk head machine screws, within the scope of ISO 2009 standard, slotted countersunk head. It also provides testing services for flat head screws (product class A) and for ISO metric precision hex bolts, screws and nuts under the BS 3692 standard.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
