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Sheet Metal, Self Tapping & Self Drilling Screws

Sharp Point and Drill Point Screws with Cutting Threads for Metal, Plastic or Wood

Sheet metal screws have sharp threads, sometimes referred to as self cutting or self threading screws, that cut into sheet metal, such as aluminum, plastic or wood. Some sheet metal fasteners are classified as Type 17 Point, these screws are notched at the tip to aid in chip removal during thread cutting. Sheet metal screws as also known as self tapping screws because they self tap into the material they are being screwed into. Self driller cutting points, also known as TEK screws available in TEK 2, 3, 4 and 5, pierce through 20 to 14 gauge metals. The higher the TEK number the larger the drill point to pierce heavier gauge metals. The shank of a machine screw is threaded up to the head(fully threaded) or to the undercut. Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides excellent retention in wood. Self tapping screws are often used for attaching aluminum to other surfaces. Self tappers are also sometimes referred to as self tapping bolts. This commonly means a sheet metal screw with a hex head on it. As the name indicates, they are often used with sheet metal because of the sharp self tapping point.