This self-tapping screw is usually designed to create threaded holes directly in the material through its own thread without the need for prior drilling, and achieve the purpose of tightening.
Semi-countersunk self-tapping screws are widely used in a variety of occasions that need to be fixed and connected, such as the connection of metal plates, plastic plates, wood, etc.
Semi-countersunk head tapping screw: The head of this screw is designed so that it can be partially sunk into the material after installation, leaving only a flat or slightly raised head on the surface, suitable for applications where the surface needs to be kept flat.
Square slot: A square slot (also known as a cross slot) is a commonly used screw slot type that allows installation and removal using a Phillips or electric screwdriver.
AB teeth: This may refer to the thread type or specification of the screw, but the exact meaning may vary from manufacturer to manufacturer. Generally, the type of thread affects the fastening force, self-tapping ability and application range of the screw.