Type A sheet metal screws feature coarse threads and gimlet points. They are often used in applications involving thin metals or wood, like resinous plywood or various composite boards.
A/AB Sheet Metal Screws- Sheet metal screws are engineered for connecting thinner metal objects to one another or connecting metal to wood, plastic, and other materials. Many sheet metal screws can start their own hole. Type A sheet metal screws have wider spaced threads for self-starting in thinner metal or plywood.Type AB sheet metal screws have more threads per inch and are more effective in brittle materials than Type A.
