Specification
3.5 x 1.5 x 0.2 inch
99 x 38 x 5 mm
Hexagon,Philip head
Self Drilling , Self Tapping
3.5-inch self-drilling screw
3.5-inch self-drilling screw is a versatile fastener with a drill-bit tip that eliminates the need for pre-drilling. Ideal for metal-to-metal or metal-to-wood applications, it combines drilling and threading in one step, saving time in construction, roofing, or HVAC projects. Made from hardened steel (often zinc-plated for corrosion resistance), its length suits thicker materials or heavy-duty joining. Common in steel framing or sheet metal work, it ensures efficient, secure installations.
Self-Piercing
Self-Drilling
Corrosion-Resist
Coated/Treated Materials
High-Strength
Load-Bearing Durability
Multi-material
Metal, Wood, Composites
Furniture Selection
Self-drilling screws are ideal for furniture assembly, especially when joining metal frames to wood, reinforcing heavy-duty joints, or attaching hardware (e.g., brackets, legs). Their self-piercing tip eliminates pre-drilling, speeding up assembly in materials like steel, hardwood, or composites. Common in industrial-style furniture, shelving, or outdoor pieces, they ensure strong, vibration-resistant connections. Choose corrosion-resistant coatings (zinc, stainless steel) for longevity in humid or high-use environments.
Light Steel Villas
Widely used in light steel villas for fastening steel frames, wall panels, and roofing sheets. Their integrated drill tip eliminates pre-drilling, enabling quick installation in metal-to-metal or metal-to-wood connections. Made from corrosion-resistant materials (e.g., galvanized or stainless steel), they ensure durability in structural joints and exterior applications. Ideal for modular construction, they enhance assembly efficiency while maintaining structural integrity in lightweight steel buildings.