A self-drilling screw is a type of fastener specifically designed to drill its own hole as it is driven into materials, like metal or wood. The key feature of these screws is their sharp, drill-like point, often resembling a miniature drill bit. This allows them to create their own pilot hole without the need for pre-drilling, making them highly efficient for construction or manufacturing work.

Key characteristics of self-drilling screws include:

1. Drill Tip: The screw has a pointed, drill bit-like end that can penetrate the material.
2. Thread Design: The threads are designed to grip the material tightly once drilled, ensuring secure fastening.
3. Material: Often made of hardened steel or stainless steel, and sometimes coated with corrosion-resistant materials like zinc or a galvanized finish.
4. Usage: Commonly used in sheet metal, light steel, and wood-to-metal applications, especially in roofing, siding, and HVAC installations.

Self-drilling screws save time by combining drilling and fastening in one step, making them ideal for tasks requiring quick and secure fastening without complex equipment.

• Heat Treated and Sharp Edge
• Countersunk Flat Screw Head
• Zinc Plated
• Drilling Tips Make Screw Driving Easier
• High Tensile Strength.
• Avoid Cracking and Splitting.
• Commonly used for Sheet Metal, C Channel, Awning and Etc 
• 100% Brand New and in Good Condition

Size Available

• 4.0mm x 16mm - 25pcs / Pack
• 4.0mm x 19mm - 25pcs / Pack
• 4.0mm x 25mm - 20pcs / Pack
• 4.0mm x 32mm - 15pcs / Pack
• 4.0mm x 50mm - 10pcs / Pack