Tek screws are characterized by their unique, cutting-edge tip that allows them to drill into hard substrates without the need for a pre-drilled hole. This feature significantly simplifies the installation process, saving time and reducing the need for additional tools. Commonly made from high-strength steel and often treated to resist corrosion, Tek screws are built to withstand harsh conditions, making them suitable for use both indoors and outdoors.

In automotive applications, metal expansion nuts are utilized in securing engine components and exhaust systems, where high temperatures can lead to expansion. Their reliability ensures that parts remain firmly attached, reducing the risk of failure.