In addition to their pointed tips, self-drilling screws often come with various coatings, such as zinc plating or ceramic finishes, which enhance their resistance to rust and environmental elements. These coatings not only extend the lifespan of the screws but also improve their aesthetic appeal, making them suitable for visible applications.

When selecting double end threaded rods, it is essential to consider not just the material but also the thread size, length, and grade. These factors influence the performance and compatibility of the rods with other components. There are standardized threads, like UNC (Unified National Coarse) and UNF (Unified National Fine), which dictate the fit and function of the fasteners, making it easier for engineers and builders to specify the correct parts for their projects.