DIN 7504-K Pan phillips self drilling screws Manufacturer and suppliers kotadia inc. ahmedabad, india. DIN 7504-K Is german Standard pan head Phillips Self Drilling Screw with Phillips drive are a common type of self-drilling screws used in various applications. The pan head provides a slightly rounded top surface, and the Phillips drive allows for easy installation with a Phillips screwdriver. These screws are designed to drill their own pilot hole, making them convenient for fastening materials without the need for a pre-drilled hole.