Introduce

Flat Head Self Drilling Screw enable drilling without first creating a pilot hole. These screws are usually used to join materials like sheet metal. It offers the highest strength compared to other metals and elements, but is the least corrosion resistant. Also known as Carbon Steel.

If you require Tek screws for wood applications you can use ones which are manufactured for roofing. The flute on these screws is very small and the diameter of the hole that it drills is smaller than the diameter of the outside screw thread. This design allows the screw to bite into the material for a secure hold.

Dimension drawing

Flat Head Self Drilling Screw

The difference between self-tapping screws and self-drilling screws

• The most important difference between self-tapping and self-drilling screws is that self-tapping screws cannot go through metal without a pilot hole, which must be pre-drilled or pre-punched.
• Unlike self-tapping screws, self-drilling screws need no pilot hole to cut and fasten; they can drill, tap, and fasten in one go, which saves you the extra step of drilling, then fastening.
• etween these two, however, self-drilling screws offer two distinct advantages: time and costs saved at assembly time, and reduced error in installation, which often happens if one pre-drills holes in the wrong size.

Application

• Securing gutter systems
• Shed, warehouse and carport construction
• Garage door fastenings
• Metal roofing installation
• Electrical projects