Here's an in-depth and comprehensive overview of the magnificent black self-tapping screw, designed to meet your specific needs.
Visual and Structural Attributes
• Head Design: Our product line features a variety of head designs including cross disc head, cross countersunk head, and hexagonal head. The cross head boasts a circular profile complemented by a central cross groove, ensuring effortless operation with a cross screwdriver. The cross countersunk head is flat with an inclined surface, enabling it to sit flush with the workpiece surface for a streamlined aesthetic. For tasks requiring increased torque, the hexagonal head is your best ally, tightened efficiently using a hexagonal wrench.
Screw and Thread: The screw's front end is expertly crafted to be sharp and conical, allowing it to easily cut threads into the workpiece without pre-threading. Its self-tapping threads are designed with a larger pitch and deeper depth, ensuring sharp, well-defined edges. This design allows it to embed itself more efficiently than standard machine screws, providing an unparalleled fixing force.
Surface Coating: The lustrous black body is treated with a high-performance coating. Coating options include blackening, electrophoresis, and Dacromet. Blackening yields a sleek black finish with certain rust resistance due to its thin oxide film. Electrophoretic coating provides a uniformly colored, mid-thickness finish with impressive rust and wear resistance. Meanwhile, the Dacromet coating is renowned for its superior rust prevention and high-temperature resilience, all without hydrogen embrittlement.
Material Characteristics
Carbon Steel Material: Crafted from medium or low carbon steel, these screws benefit from heat treatment to enhance hardness and strength. This enables them to penetrate wood, plastic, and thin metal sheets effortlessly, ensuring a secure and steadfast connection.
Alloy Steel Material: For high-performance applications, our screws are available in alloy steel options like stainless steel alloy and high-strength alloy steel. Stainless steel screws deliver exceptional corrosion resistance, making them ideal for use in humid, acidic, and alkaline environments. In contrast, high-strength alloy steel screws are built to endure higher tensile and shear forces, perfectly suited for demanding applications requiring robust fastening strength.
Specification and Size
Diameter Specifications: Available in a variety of sizes including M1.6, M2, M2.5, M3, M3.5, M4, M5, and M6. Smaller diameters are perfect for electronics and small plastic products, while larger diameters excel in securing building panels and metal components.
• Length Range: Ranging from a few millimeters to several hundred millimeters, with options like 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, and 50mm. In practical applications, selecting the right length is crucial to ensure the screw fully penetrates and secures the material effectively.
Application Areas
Architectural Decoration: A staple in the installation of gypsum board ceilings, wooden keels, fiber boards, and frame connections, these screws ensure rapid and secure attachment to keels or walls, optimizing construction efficiency.
Furniture Manufacturing: Essential in furniture assembly, these screws connect wood, artificial boards, and more, ideal for assembling wardrobes, desks, and chairs. The black finish blends seamlessly with dark wood, preserving the aesthetic appeal.
Electronic Appliances: Perfect for assembling electronic device casings and securing circuit boards in items like computer cases and mobile phone back covers. The black coating not only prevents reflective disruption but also guards against rust within electronic products, maintaining the integrity and stability of the device.
• Automotive Manufacturing and Maintenance: Critical for installing interior automotive parts and securing components, ensuring durability and reliability.
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