Din 7504 K Standard Pdf Jun 2026
DIN 7504 K specifies requirements for hexagon head self-drilling screws with a tapping screw thread and a flange (integral washer)
The standard specifies the requirements for self-drilling tapping screws with hexagonal heads and collars . These fasteners are designed to drill their own pilot hole and form their own mating threads in a single operation, typically into metal sheets or other ductile materials. Technical Overview of DIN 7504 K
: It provides exact measurements for thread pitch, head height, and across-flats dimensions, ensuring compatibility with standard sockets and drivers.
The "K" point is designed to pierce and form threads in pre-punched or pre-drilled holes without creating chips. Unlike thread-cutting screws (which remove material), thread-forming screws (like the DIN 7504 K) displace the material of the workpiece, creating a tight, residual compressive stress around the threads.
DIN 7504 K specifies requirements for hexagon head self-drilling screws with a tapping screw thread and a flange (integral washer)
The standard specifies the requirements for self-drilling tapping screws with hexagonal heads and collars . These fasteners are designed to drill their own pilot hole and form their own mating threads in a single operation, typically into metal sheets or other ductile materials. Technical Overview of DIN 7504 K
: It provides exact measurements for thread pitch, head height, and across-flats dimensions, ensuring compatibility with standard sockets and drivers.
The "K" point is designed to pierce and form threads in pre-punched or pre-drilled holes without creating chips. Unlike thread-cutting screws (which remove material), thread-forming screws (like the DIN 7504 K) displace the material of the workpiece, creating a tight, residual compressive stress around the threads.
