Hex head drilling screws are used for metal-to-metal fastening in a wide variety of applications, from commercial construction to DIY projects. They are designed to fasten metal components to other metal components with strength and ease. Self-drilling screws, also known as Tek screws, have a point that resembles a drill bit, allowing them to easily carve into materials like thin metals and wood without the need for a separate pilot hole. This makes them a popular choice for building and construction projects due to their versatility, efficiency, and ease of use. The screws are numbered, indicating their ability to penetrate thicker materials before requiring a pilot hole. Hex head drilling screws come in various sizes and finishes, such as zinc plating or stainless steel, ensuring suitability for any project and environment.
What You'll Learn
Zinc-plated steel
The hex washer head design of the screws distributes holding pressure to thin metal, making them ideal for securing metal to metal. The self-drilling feature saves time and effort by drilling their own holes and fastening in a single operation. The screws meet various standards and specifications, including ASTM C 1513 for cold-formed steel framing connections, F.I.P.-1000.7 for torsional strength and drill speed, and ASTM A 510 for carbon steel manufacturing.
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Self-tapping
When using self-tapping screws, it is important to consider the thickness of the material being attached. The length of the flute on the screw determines the thickness of the material that can be drilled. If the flute becomes blocked, the cutting will stop, and the drill point may overheat and fail. It is also important to note that stainless steel self-drilling screws cannot drill into steel; they are designed to drill into softer materials like aluminium.
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HVAC applications
High-quality hex head drilling screws are an essential component in the HVAC industry, used for assembling ducts and their parts. These screws are designed to streamline the installation process and enhance productivity. Their self-drilling capability eliminates the need for pre-drilling, making them ideal for quickly and securely fastening thin metal sheets.
In HVAC applications, hex head drilling screws are commonly used for light gauge sheet metal and residential ductwork. The screws are designed to easily drive into light sheet metal, creating a strong and durable connection. The sharp and hardened drill point of the screw pierces through the metal without causing splitting or cracking. This ensures a secure and reliable connection that will last for years.
The versatility of hex head drilling screws makes them suitable for a range of HVAC applications. They can be used for both indoor and outdoor installations and are available in various sizes to meet specific project requirements. The screws are also suitable for use with other materials, such as aluminium, galvanized steel, stainless steel, and lightweight plastic materials like PVC.
When choosing hex head drilling screws for HVAC applications, it is important to consider the quality and durability of the screws. Look for screws that are zinc-plated, ceramic-coated, or made of coated stainless steel to prevent rust and ensure long-term performance. Additionally, the right size of the screw is crucial for effective installation.
Overall, high-quality hex head drilling screws play a vital role in the HVAC industry, providing a convenient, efficient, and reliable solution for assembling ducts and ensuring durable connections that meet the highest standards.
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Curtainwall and glazing applications
High-quality hex head drilling screws are ideal for curtain wall and glazing applications. Curtain walls are non-structural systems for the external walls of buildings. They can be assembled and glazed in the field or in a shop environment.
Hex head drilling screws are perfect for curtain wall and glazing applications as they have a drill-shaped point that can cut through sheet metal or steel. This eliminates the need for pre-drilling a pilot hole. The high head of the screw also helps it stay in the nutsetter during installation, reducing worker fatigue and waste. The serrations under the head also prevent the screw from backing out due to vibration.
For example, the #14 x 2" Sealing Hex Washer Head Self-Drilling Screws are made of 410 stainless steel with a bonded 18-8 stainless and neoprene washer. They are suitable for solar panel installation, curtain wall and window wall, automotive applications, robotics and automation, and water treatment plants.
Another option is the #10 x 2" Sealing Hex Washer Head Self-Drilling Screws, which are also made of 410 stainless steel with a bonded 18-8 stainless and neoprene washer. These screws are also suitable for a wide range of applications, including solar panel installation, curtain wall and window wall, automotive applications, and robotics and automation.
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Steel stud framing
When choosing the right hex head self-drilling screws for steel stud framing, there are several factors to consider:
Screw Type
Hex head self-drilling screws are available in different types, including:
- Washer Head Screws: These screws feature a built-in washer that distributes surface pressure more evenly, resulting in a more secure and stronger fastening.
- Truss Head Screws: Truss head screws have a low profile, making them suitable for applications where drywall or plywood will cover the metal studs.
- Pancake Head Screws: Pancake head screws are similar to truss head screws and can be used interchangeably. They are commonly used for metal stud-to-stud connections.
- Wafer Head Screws: Wafer head screws have a large holding surface, making them ideal for fixing drywall profiles together or mounting accessories to steel structures.
Screw Size
Hex head self-drilling screws come in various sizes, typically ranging from #8 to #14 in diameter. The length of the screws can vary from 1/2" to 3" or even 4" depending on the specific application. For steel stud framing, the most common sizes are #10 x 3/4" and #10 x 5/8".
Coating
To prevent corrosion and ensure durability, hex head self-drilling screws are typically coated with zinc. This coating provides corrosion resistance and enhances the screw's ability to withstand pressure and environmental factors.
Threading
Self-drilling screws used for steel stud framing typically feature full threading from the tip to the head of the screw. This full threading improves weight distribution, enabling the screw to handle tension and withstand greater forces for extended periods.
Application
Hex head self-drilling screws are suitable for various applications within steel stud framing. They can be used for connecting metal studs to each other, attaching drywall or plywood to metal studs, or securing accessories to steel structures.
When selecting hex head self-drilling screws for steel stud framing, it is essential to consider the specific requirements of your project, including the type of materials being fastened, the load-bearing capacity needed, and the environmental conditions the screws will be subjected to.
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