PAN HEAD SELF DRILLING SCREW

Advantages of Pan Head Self-Drilling Screws 

Good aesthetics: in the fields of furniture making, decoration and so on, pan head self-drilling screws can provide neat and beautiful appearance. For example, when fixing decorative sheets on the surface of wooden furniture, using pan head self-drilling screws can make the surface smooth without protruding parts and keep the overall beauty of the furniture. In architectural decoration, such as installing wooden or metal decorative lines, pan head self-drilling screws can be hidden inside the decorative lines without affecting the decorative effect.

Avoid interference: because the head is not prominent, it is very practical in some scenes where subsequent operations or other objects need to be placed on the surface of materials. For example, in the case assembly of electronic equipment, if stickers, labels or other small components need to be placed on the surface of the case, the pan head self-drilling screws will not interfere, which ensures the smooth progress of these subsequent operations.

Good adhesion: After the pan head self-drilling screw is tightened, the head closely adheres to the surface of the material, which can provide better pressure distribution. This close fit helps to enhance the stability of the connection, especially when bearing forces perpendicular to the connection surface (such as axial tension). For example, when fixing the insulation board of the external wall of a building, the pan head self-drilling screws can evenly press the insulation board on the wall surface, improve the firmness of the connection, and effectively resist the peeling of the insulation board under the action of external forces such as wind.

Strong anti-loosening ability: its threaded part forms a close mechanical bite with the material after drilling into it. In the vibration environment, such as the fixing of automobile interior parts or the shell installation of industrial equipment, this occlusion can effectively prevent the screws from loosening. Moreover, because the head is attached to the surface of the material, the relative displacement caused by vibration is reduced, and the anti-loosening performance is further enhanced.

Design Characteristics of Pan Head Self-Drilling Screws

Head shape: the head of the pan head self-drilling screw is flat, which makes it flush or nearly flush with the surface of the connected material after installation. This is the most remarkable difference between it and other head-type self-drilling screws (such as round head and hexagon head).

Drill tip and threaded part: the front end of the screw of the pan head self-drilling screw has a drill tip with self-drilling function, which can drill holes by itself during rotation. The material of the drill tip is usually hard, such as cemented carbide, to ensure that it can effectively penetrate various materials. The design of the threaded part closely follows the drill tip and is used to form a tight connection with the material after drilling into it. The shape and pitch of the thread will be different according to the specific application scenarios and material types. For example, when connecting soft wood, the thread may be sharper, which is convenient for quickly breaking into wood and forming a firm connection.

Material Applicability of Pan Head Self-Drilling Screws 

Metal materials: In the connection of metal materials, pan head self-drilling screws can be used to connect metals with different thicknesses and hardness. For thin metal plate (such as aluminum plate or steel plate with thickness less than 3mm), it can drill and fasten itself quickly and effectively. For example, in automobile manufacturing, pan head self-drilling screws can be used to fix some thin metal decorative parts or brackets of electrical circuits inside the automobile body, and reliable connection can be realized without damaging metal materials. For thicker metal materials, as long as the pan head self-drilling screws with appropriate specifications (such as larger diameter and sufficient length) are selected, good connection effect can also be provided, but more torque may be needed to drive them to drill in.

Wood materials: It is also very suitable for the connection of wood materials. Whether it is cork (such as pine) or hardwood (such as oak), pan head self-drilling screws can play a good role. In furniture making, such as fixing wooden table tops or cabinet doors, pan head self-drilling screws can directly drill into wood, and their flat-headed design will not damage the beauty of wood surface like other head-shaped screws. Moreover, due to its self-drilling function, there is no need to drill holes in advance, which improves the manufacturing efficiency.

Composite materials: For composite materials, such as fiber-reinforced plastics, pan head self-drilling screws are relatively gentle during drilling, and will not easily destroy the internal fiber structure of composite materials like some sharp-headed screws. In the assembly of some small composite parts in the aerospace field or the manufacture of sports equipment (such as carbon fiber bicycle frames), pan head self-drilling screws can be used as an effective connection method, which can ensure the connection strength and minimize the impact on the properties of composite materials.