How to Choose Tek Screws (Self-Drilling Screws)
2020-7-29u2002·u2002Tek screws or self-drilling screws come with an additional pair of bladed flutes which extends from the threaded portion of the body all the way to the drilling tip. The purpose of this is to combine the drilling and tapping function onto the same screw, thus eliminating the need to pre-drill …
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