One of the primary uses is to hold covers and panels in a position such as on HVAC equipment where contractors fasten sheet metal. Sheet metal screws, unlike thread cutting screws, do not produce any material chips that could cause shorts, taint lubricants, or obstruct mechanical operation. Other names you may hear are taping screws, self-tapping screws, thread forming screws, and thread forming tapping screws are all names for sheet metal screws. It is often called thread forming screws because they “tap” their internal mating threads by forcing material outward and into them to establish a tight fit that won’t loosen. They’re reusable high-strength fasteners you can remove for maintenance and repairs. Sheet metal screws have been used since the early 1900s for metallic and nonmetallic materials too thin to tap.
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