Self-Drilling (Tek Type) Screws
Self-Drilling Screws (Tek Screws) provide the same features and attributes as Self-Tapping Screws, only with a self-drilling point instead of a self-piercing point. They are some of the most important and widely utilized commercial fasteners in use today. They are aptly named, as their drill point allows them to drill their own hole into the mating metal surface, thus eliminating the need for a pre-drilled pilot hole. The deep, sharp threads cut their own internal threads into the mated material.