Fibre Cement Roofing Screws with BAZ washer

Umbrella washer hex head self-drilling screws are commonly used in construction and woodworking applications. They have a hexagonal head that can be tightened with a wrench or a socket, providing a secure and tight connection.The umbrella washer, also known as a neoprene washer or EPDM washer, is a rubber or synthetic material washer with a wide, umbrella-like shape. It is attached to the screw under the hex head. The purpose of this washer is to provide a watertight seal and prevent water or moisture from penetrating the connection point.Umbrella washer hex head self-drilling screws are designed to enable drilling and fastening in one step. They have a self-drilling point that eliminates the need for pre-drilling a hole, saving time and effort during installation. The self-drilling feature allows the screws to be used on various materials, including metal, wood, and plastic.These screws are commonly used in outdoor structures such as decks, fences, roofing, and siding, as well as in industrial and commercial applications. They are ideal for projects where a watertight seal is crucial, as the umbrella washer helps prevent water leakage and corrosion.When using umbrella washer hex head self-drilling screws, make sure to choose the appropriate length, diameter, and material type based on your specific project requirements. It is also important to follow the manufacturer's guidelines for proper installation and torque values to ensure a secure and reliable connection.