Release time：2020-01-16 18:44 Browse：
1. **Material Specification** - Constructed from two types of premium stainless steel: 304 and 410. 304 stainless steel, known for its excellent corrosion resistance, contains 18% chromium and 8% nickel, making it highly resistant to rust, oxidation, and general chemical attacks. This grade is ideal for applications exposed to moisture, such as coastal buildings, bathroom fixtures, or outdoor installations. In contrast, 410 stainless steel is a martensitic grade, which offers high strength and hardness due to its lower nickel content and higher carbon content. It has good wear resistance and is suitable for parts that require mechanical strength, such as fasteners in heavy machinery or structural components. - The use of stainless steel ensures that the screws maintain their integrity over time, reducing the risk of breakage, deformation, or degradation caused by environmental factors. This not only extends the lifespan of the fastened structures but also minimizes the need for frequent replacements. 2. **Design Features** - **External Hexagonal Head**: The screws are equipped with an external hexagonal head, a classic and widely - used design in the fastening industry. This shape allows for a firm grip when using standard hexagonal wrenches, socket wrenches, or power - driven tools. The flat surfaces of the hexagon provide maximum torque transfer, enabling users to tighten or loosen the screws with minimal effort and reducing the risk of slippage during operation. - **Drill Tail Design**: The innovative drill tail feature is a key advantage of these screws. The sharp, pointed tip is specifically engineered to drill through various materials, including metal sheets, wood, and plastic, without the need for pre - drilling. The fluted design of the drill tail helps to remove debris during the drilling process, ensuring a smooth and efficient penetration. This self - drilling and self - tapping functionality significantly speeds up the installation process, making it a time - saving solution for both professional contractors and DIY enthusiasts. - **Dovetail Shape for Color Steel Tiles**: These screws are customized with a dovetail shape, which is tailored to the unique requirements of color steel tile installation. The dovetail profile creates a tight, interlocking fit between the screw and the tile, providing enhanced resistance against vibration, wind, and other external forces. This design not only secures the tiles firmly in place but also distributes the load evenly across the surface, preventing stress concentrations that could lead to tile cracking or damage. Additionally, the dovetail shape helps to create a more aesthetically pleasing finish, as the screws sit flush with the tile surface. 3. **Compliance with Standards** - Strictly adhere to the DIN7504K standard, a well - recognized German industrial norm that sets precise requirements for the dimensions, mechanical properties, and quality control of self - drilling and self - tapping screws. DIN7504K ensures that these screws meet consistent quality levels, with accurate thread pitches, diameters, and head sizes. This standard compliance also guarantees that the screws are compatible with other components and systems that follow the same or related standards, facilitating seamless integration into various construction and manufacturing projects. - The compliance with DIN7504K is verified through a series of rigorous testing procedures, including tensile strength tests, hardness tests, and corrosion resistance tests. These tests ensure that the screws can withstand the expected loads and environmental conditions during their service life, providing users with reliable and safe fastening solutions. 4. **Applications** - **Color Steel Tile Roofing and Cladding**: These screws are the ideal choice for installing color steel tiles in roofing and wall cladding projects. Whether it's for industrial warehouses, commercial buildings, or residential homes, the dovetail self - tapping and self - drilling screws provide a secure and long - lasting connection. They can effectively resist the effects of weathering, such as rain, snow, and UV radiation, ensuring that the color steel tiles remain firmly in place and maintain their structural integrity over the years. - **General Metal Fabrication**: In addition to color steel tile applications, the 304/410 stainless steel external hexagonal drill tail screws are suitable for a wide range of metal fabrication projects. They can be used to assemble metal frames, brackets, and enclosures in industries such as automotive, aerospace, and electronics. The high strength and corrosion resistance of the stainless steel make them suitable for both indoor and outdoor metal structures, providing a reliable fastening solution in various environments. - **Renovation and Maintenance**: For renovation and maintenance projects, these screws offer a convenient and efficient solution. Their self - drilling and self - tapping capabilities eliminate the need to remove existing structures or components for pre - drilling, saving time and effort. Whether it's replacing damaged screws or adding new fixtures to an existing metal structure, these screws can be quickly and easily installed, ensuring a secure and durable repair or upgrade. - **DIY Projects**: DIY enthusiasts will also find these screws extremely useful. Their ease of use, combined with their high - quality materials and reliable performance, makes them suitable for a variety of home improvement and craft projects. From building outdoor furniture to installing shelving units, these screws provide a professional - grade fastening solution that can be easily handled by users with basic DIY skills.
