100 Pcs High Quality 4.2x25mm Crushed Head Pin

100pcs High Quality 10"x25mm Scratching Head Stud

About this item Self drilling screws with a countersunk head or countersunk head are a useful piece of equipment for many types of work, such as those that use roofing materials, sheet metal and wood. It is a self-drilling thread head style, which means it is specially designed with drill points that bite through metal. This eliminates the time and effort spent drilling an extra pilot hole. Carbon Steel Head Type: Dreaded Diameter: 4.2 mm Length: 25 mm Number 100 Pcs Thread: Full Thread, Partial Thread Point: Drilled or Sharp Drive: Philips, Pozi, Socket, Hex, Square, Slotted, Built-in High Light: Self-Drilling Fasteners, Self-Tapping Screws for Metal