ARMSTRONG SELF DRILLING SCREW WOOD (1, 1 1/2, 2)

Armstrong self-drilling screws for wood, also known as "Tex screws," are designed with a drill-point tip that eliminates the need for pre-drilling a pilot hole in wood. They are commonly used in roofing and electrical work, and are available in various lengths, typically ranging from 25mm to 75mm. These screws feature a hexagonal head with a washer face and are often supplied with rubber washers.