Self drilling screws 3.9/3.5 x 0.15 + 0.2 inch
3.9,3.5-inch self-drilling screw is a versatile fastener designed for efficiency, featuring a drill-point tip that eliminates the need for pre-drilling. Ideal for metal, wood, or composite materials, it is commonly used in construction, HVAC, and metal framing. The screw’s sharp tip acts as a drill bit, enabling quick installation, while corrosion-resistant coatings (e.g., zinc) enhance durability in harsh environments.
in Loosen and Dencer Screw Thread
Customized anti-loosening and dense screw threads are engineered fasteners designed to enhance grip and resist vibration-induced loosening. Features may include:
- Locking threads (e.g., nylon patches, deformed shapes) to prevent backing out.
- Tighter thread pitch (more threads per inch) for increased load distribution and strength.
Tailored
Tailored thread pitch
Reinforced
Reinforced thread edges
Adapted
Adapted screw lengths
Engineered
Engineered screw profiles
Use in Light Steel Villas
Self-drilling screws are essential in light steel villa construction for their efficiency and structural reliability. These screws eliminate the need for pre-drilling holes, enabling quick and secure fastening of thin steel frames, wall panels, and roofing sheets. Their sharp drill-point tip penetrates steel and other materials (e.g., gypsum, insulation) effortlessly, while corrosion-resistant coatings (e.g., zinc, ceramic) ensure durability in harsh environments. Ideal for assembly of prefabricated components, they enhance structural stability, resist vibration loosening, and streamline installation, making them a cornerstone of modern light-gauge steel building systems.
Solar Panel Mounting
Self-drilling screws are critical for attaching solar racks to metal roofs or ground-mounted systems, offering fast and secure installation without pre-drilling. Their drill-point tip penetrates metal substrates (e.g., aluminum, galvanized steel) effortlessly, while corrosion-resistant coatings (zinc, ceramic) withstand harsh weather, UV exposure, and coastal environments. These screws ensure high tensile strength to handle wind loads and vibrations, maintaining long-term stability for solar arrays. Ideal for both residential and commercial projects, they streamline assembly, reduce labor costs, and provide reliable performance in diverse climates.
