The black zinc plated steel sheet metal screw with pan head and Phillips drive has a Type AB point for forming threads in thin metals between 0.015 and 0.050... The Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to allow the driver to slip out of the head to help prevent over-tightening and damage to the thread or fastener. The point style determines the type of material the screw can be used on, such as metal, wood, or plastic. Small Parts 0416ABPPBZ Steel Sheet Metal Screw, Black Zinc Plated Finish, Pan Head, Phillips Drive, Type AB, #4-24 Thread Size, 1" Length (Pack of 100),Small Parts,Sheet Metal Screws,Screws,Fasteners,Industrial & Scientific Steel is often used in applications where strength is the primary consideration. These screws commonly have a sharp point that helps penetrate the material. 4-24 X 1" Phillips Pan Head Sheet Metal Screw, Type AB, Steel, Zinc Black (Box Of 10000 Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to prevent over-tightening The zinc plating offers corrosion resistance and has a black reflective appearance. Sheet metal screws, a type of self-tapping screw, have threads down the entire length of the shank for tapping and fastening thin material. Phillips Pan Head SMS Black Oxide 18-8 Stainless Steel #10 x 3/4 Qty-100 Fastene Visit the Home Depot to buy Crown Bolt #4 x 3/8 in. Zinc-Plated Steel Pan-Head Phillips Sheet Metal Screws (16-Pack) 24701