4% self-drilling screws are specifically designed to drill through harder materials such as steel and concrete. These screws have a special drill bit on the tip that allows them to penetrate the surface easily without the need for a separate drilling process. This feature is especially useful in applications where time is of the essence, as it speeds up the installation process significantly.

In addition to their strength and durability, expansion anchors are also highly versatile and can be used in a wide range of applications. From hanging shelves and mirrors to securing heavy machinery and equipment, these anchors offer a cost-effective and efficient solution for fastening tasks of all sizes. They are also available in a variety of sizes and designs to accommodate different types of fasteners and materials, making them suitable for a diverse range of projects.

The mechanical properties of A325 fasteners include a minimum yield strength of 80 ksi and a minimum tensile strength of 120 ksi, ensuring they can handle the demanding conditions often found in structural applications.