2. Corrosion Resistance Many manufacturers provide M20 bolts with coatings or treatments (like galvanization) to enhance corrosion resistance. This is vital for outdoor and industrial applications where exposure to moisture and chemicals is common.

- Construction They are essential for anchoring structural beams, columns, and other heavy components.

5. Easy to Remove In addition to being easy to install, hex head self-drilling screws can also be easily removed with the appropriate tool. This feature allows for adjustments or repairs without damaging the surrounding material, which can be particularly beneficial in multi-stage construction or renovation projects.

Tek screws, also known as self-drilling screws, are specially designed fasteners that eliminate the need for pre-drilling holes in the materials being joined. They feature a drill point at the tip, allowing the screw to penetrate and create its own hole as it is driven into the material. The term Tek is derived from the brand name of a popular series of self-drilling screws, but it has become a generic term within the industry.