Pan head self-tapping sheet metal screws defined in the DIN 7981 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. These flat head self tapping screws are fully threaded with a coarse thread and a knuckle point. It is recommended to be used in thin sheet metal, resin plywood and composite materials. The pan head is cylindrical with a slightly rounded top surface and a flat bearing surface at the bottom. This head style is ideal for most applications where a protruding head is acceptable.
Similarly, the ISO 7049 standard published by the International Standards Organization (ISO) describes the characteristics of cross recessed flat head tapping screws with thread sizes from ST 2,2 to ST 9,5 (ISO 7049 Cross countersunk pan head tap screws) .
In the DIN 7981 standard, the requirements for cross countersunk pan head lead screws are listed under the following headings:
In short, cross countersunk lead screws are threaded connections with a coarse thread and a cross-recessed drive head. These screws are suitable for use in a threadless hole and can be operated with a screwdriver. Lead screws are also sometimes called sheet metal screws.
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, is a cross recessed pan for cross flush pan head tap screws within the scope of DIN 7981 standard and within the scope of ISO 7049 standard. also provides testing services for head lead screws.
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.
