Self-Drilling Screws are commonly known by the brand name TEK screws. Value Fastener offers a full line of self-drilling, thread forming screws, with a wide variety of head styles and finishes that makes it easy to find the right option for nearly any application. TEK screw equals feature special pointed ends that allow them to penetrate thin materials without a starting or pilot hole.
These self-drilling, woodworking screws cut their own threads for a secure grip on the mating material. Generally, TEK self-drilling screws are used for metal-to-metal or metal-to-wood connections, and are most commonly used in thin metal applications such as working with steel studs.
DIN. 7504. Supersedes February 1992 edition. Descriptors: Self-drilling tapping screws, tapping screws, fasteners.
IN this case the ISO equivalent for DIN 7504 are ISO 15480, 15481 and 15482.
