Zinc Sheet Screws

Description

Sheet metal screws have a fully threaded shank with sharp threads and tips that allow them to cut through metal, wood, plastic, and various other materials.

There are two basic types of sheet metal screws, self-tapping screws and self-drilling screws. Self-tapping screws have a sharp tip that is designed to cut through metal, but the metal must be pre-drilled before these screws can be used. Self-drilling screws have a drill point tip that can easily cut through metal without a pre-drilled hole.

Sheet metal screws made out of carbon steel are the most common and typically the most economical. These screws are prone to rust and corrosion when exposed to moisture or chemicals, so they should typically only be used indoors. Galvanized or stainless steel screws are designed to resist rust and corrosion but tend to cost more than standard steel screws. Sheet metal screws may be coated with zinc or nickel to modify their appearance.