Self-Drilling Screw with Wings - Zinc Plated, Phillips Drive - for Metal Roofing & Construction

Product Description

The zinc-plated steel self-drilling screw with wings has an 82-degree flat head and a Phillips drive. 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 head has an 82-degree cone-shaped bearing surface for use in countersunk holes and a flat top that fits flush with the mated surface. 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. Wings located above the drill point enable secure fastening of thick wood to metal. The wings act as a reamer to create a clearance hole in the wood and break off when they reach the metal so the screw can thread into the metal.Self-drilling screws, a type of self-tapping screw, are threaded fasteners that drill their own hole and thread it as they are installed. Usually only recommended for use with metal, self-drilling screws are available with wings that enable use when fastening wood to metal. The drill point length should be long enough to penetrate both materials being fastened before the threading portion reaches the material.