Originally Posted On: How to Select a Drill Point Size (mudgefasteners.com)
Tek® screws, are also known as self drilling screws, but are not to be confused with self-tapping or sheet metal screws which do not pre-drill. A self-drilling screw has a very small carving at the end of its tip called a drill bit. These screws drill their own hole and then tap threads to combine two or more pieces of material together without pre-drilling. This is done with nothing more than a standard power drill motor. Depending on the thickness of the material you are drilling into, you have several drill points available, the longest being a Tek 5.
Click here to download a printable PDF version of the guide to use for reference when making decisions about which drill point size is right for which fasteners for your application.
If you have any questions about self drilling screws from Mudge Fasteners, please call us at (800) 634-0406.