Self-drilling screws, also known as Tek screws, are fasteners that can drill their own pilot holes as they are being installed. This feature eliminates the need for pre-drilling, significantly reducing assembly time and effort. Their design typically incorporates a drill point, which allows the screw to penetrate hard materials, including metal and wood, without additional tooling.

Wall Anchor Butterfly Nature's Ingenious Design

2. Diameter and Length The diameter and length of the anchor bolts should be tailored to the load requirements of the application. Specifications must categorize bolts by their tensile and shear strength, allowing engineers to choose the appropriate size.

Metal expansion nuts find their usage in diverse fields. In construction, they are frequently employed for securing structural elements, like beams and frames, in concrete. They are also prevalent in HVAC systems, where they help secure ducts and other installations prone to thermal expansion.