: The modern international equivalent is ISO 15480 . Dimensions : Diameters : Standard sizes range from ST 3.5 to ST 6.3 .
: Varies by diameter, typically ranging from 2.0 mm (for ST 3.5) up to 6.0 mm (for ST 6.3). Dimensional Reference Table Metric DIN 7504 Self Drilling Screws - Aspen Fasteners din 7504 k standard pdf
The DIN 7504 K screw functions as a cold-forming tool. Upon insertion into a prepared pilot hole, the screw displaces the thermoplastic material into the root cavities of the thread. : The modern international equivalent is ISO 15480