The addition of washers to hex head self-tapping screws is another feature that enhances their performance. Washers are flat discs, usually made of metal or plastic, placed under the head of the screw. They serve several important purposes

Another crucial aspect of bolt structure is the surface treatment of bolts, which can significantly improve their performance. Surface treatments such as galvanization, coating, or anodizing can enhance a bolt's resistance to corrosion and wear, extending its service life. For instance, galvanized bolts are coated with zinc to prevent rusting, making them suitable for outdoor applications. Similarly, anodized bolts, commonly used in aluminum alloys, have a protective oxide layer that not only enhances corrosion resistance but also improves aesthetic appeal.

When it comes to securing heavy loads in construction and renovation projects, heavy-duty expansion anchors are a vital component. These robust fastening solutions are designed to provide significant pull-out resistance and are widely used to anchor materials to concrete and masonry surfaces. Understanding their features, types, benefits, and applications can help ensure their effective use in various projects.

4. Adaptability With various types available, Tek screws can be selected based on the specific needs of a project, allowing for flexibility in usage.