Hex head self-drilling screws are utilized across various industries due to their flexibility and efficiency. In construction, they are commonly used for attaching metal panels, securing roofing sheets, and assembling framework. In automotive and aerospace industries, these screws play a critical role in joining components and ensuring structural integrity.

The functionality of metal expansion nuts centers around the principle of mechanical expansion. Upon the application of torque, the screw or bolt is threaded into the nut, which, in turn, causes the nut to expand outward. This outward expansion presses the sides of the nut against the inner walls of the hole it occupies, creating a tight fit. The added friction and mechanical grip prevent the nut from loosening over time, even in dynamic conditions.

While self-drilling screws offer numerous benefits, it is crucial to select the appropriate type and size for your specific application. Over-tightening or using the wrong length can compromise the integrity of the joint. Additionally, while self-drilling screws are designed for efficiency, they should ideally be used on materials that are compatible with their drilling capabilities.

1. Self-Drilling Tek Screws These screws come with a drill point that allows them to penetrate and create their own pilot hole in concrete and masonry. They are ideal for fastening materials like metal, wood, or plastics to concrete surfaces.