Screws are essential tools for building and DIY projects. They come in a variety of styles, each tailored to a certain application. Understanding the many types of builder’s screws can help you select the best one for your project. Here’s a complete introduction to some of the most popular types of screws used in building and construction:
Concrete Screws
Concrete screws are designed for use in concrete and masonry. They are incredibly tough and provide firm placement, making them ideal for heavy-duty construction where anchoring to a cement wall or foundation is required.
Deck Screws
Deck screws are commonly used for outdoor woodwork, especially in building decks. They are well-suited for use in pressure-treated lumber and are known for their durability and resistance to corrosion.
Drywall Screws
Specially made for drywall installations, drywall screws have a fine tip and a sharp, wide thread that ensures secure holding in weak surfaces like drywall or gypsum board. They can also be used in wood studs.
Lag Screws
Lag screws, also known as lag bolts, are heavy-duty fasteners used in wood construction, particularly in applications where a heavy load is expected. They are larger and stronger than most other screws, providing a robust and secure connection.
Machine Screws
Machine screws are used to fasten metal parts together, often in conjunction with a matching nut. They come in various sizes and are commonly used in machinery and electronic devices.
Metric Screws
Metric screws are sized differently than US standard screws and are available in several styles. They are used in applications where metric measurements are required.
Self-Drilling Screws
Self-drilling screws eliminate the need for pre-drilling holes, as they have a drill-bit point that can penetrate metal and other materials. They are commonly used in metal construction.
Self-Piercing Screws
Similar to self-drilling screws, self-piercing screws do not require pre-drilling and are often used in roofing applications. They have a sharp point that can easily pierce through thin materials.
Self-Tapping Screws
Self-tapping screws, also known as sheet metal screws, can tap their own threads into materials. They are versatile and used in a wide variety of applications, including metal, wood, and plastic.
SEMS Screws
SEMS screws come preassembled with a free-spinning lock washer, saving installation time. They are ideal for applications that require a washer for added security.
Serrated Hex Flange Screws
These screws have a serrated flange that provides a locking action, preventing them from loosening over time. They are commonly used in automotive and machinery applications.
Thread-Cutting Screws
Thread-cutting screws have a sharp cutting tip that creates threads in materials like wood, plastics, and metals that are not already threaded. They are useful for creating strong internal threads.
Thread-Forming Screws
Also known as thread-rolling screws, thread-forming screws create their own threads in thinner materials, reducing the risk of splitting or cracking.
Thumb Screws
Thumb screws are designed for easy hand-tightening, making them convenient for applications that require frequent assembly and disassembly.
Weld Screws
Weld screws are designed to be permanently welded to a metal surface, providing a strong and permanent connection.
Wing Screws
Wing screws have wing-like projections that allow for easy hand-tightening. They are commonly used in machinery and equipment where manual adjustments are needed.
Wood Screws
Wood screws are specifically designed for wood applications, providing a strong and secure hold in wooden materials.
Each type of screw has its unique features and benefits, making it essential to select the right screw for your specific project needs. By understanding the different types of builder’s screws and their uses, you can ensure a successful and secure construction or DIY project.