The steel thread cutting screw has a zinc plating, a Type F point style, and an 82-degree flat undercut head with a Phillips drive. The type F point is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic. The screw has machine screw threads that taper down to a blunt point with multiple cutting edges and chip cavities. Steel is often used in applications where strength is the primary consideration. The zinc plating offers corrosion resistance and has a reflective appearance. The flat undercut head has a flat top with an 82-degree cone-shaped bearing surface and is undercut to a lower head height for use in shallow countersunk holes. 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.Thread cutting and thread rolling screws, two types of self-tapping screws, are threaded fasteners that create a mating thread in the wall of a hole. The two screws differ from each other in the way that they create the threads. Thread cutting screws cut the wall of the hole to create the thread, creating material chips that need to be cleared away from the hole to prevent clogging. Thread rolling screws, also called thread forming screws, do not remove material but instead press against the wall of the hole to displace the material and form the threads. Thread cutting screw with type F point has machine screw threads that taper down to a blunt edge and is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic Steel is often used in applications where strength is the primary consideration Zinc plating resists corrosion and has a reflective appearance Flat undercut head has a flat top with an 82-degree cone-shaped bearing surface and is undercut for use in shallow countersunk holes Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to prevent over-tightening Brand Small Parts Color zinc Model 0205FPU Head Type Flat Size Name #2-56 Metal Type Alloy Steel Unit Count 100.0 Count Item Weight 0.01 Ounces Part Number 0205FPU Thread Size #2-56 Thread Type Unc Drive System Phillips Manufacturer Small Parts Thread Class Unc Thread Style Right Hand Fastener Size No. 2 Fastener Type Machine Screw Material Type Steel Exterior Finish black_zinc_plated Item Dimensions 0.31 x 0.09 x 0.31 inches Number Of Items 100 Thread Coverage Fully Threaded Number of Pieces 100 Screw Head Style Flat Undercut Screw Point Style Type F Point Set Screw Thread Type Unified National Coarse (UNC)