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Steel screws



Self-drilling screws: Simple, fast and efficient fastening

Self-drilling screws are indispensable fastening solutions for metal-to-metal joints, sheet metal, and many other applications. Thanks to their special tip, they can be drilled and screwed in a single operation, without pre-drilling or tapping. Ideal for professionals and DIY enthusiasts alike, they save a considerable amount of time while ensuring solid, long-lasting fastening.

Why use self-drilling screws?

Self-drilling screws offer many advantages for professionals in the building, industry and DIY sectors:

  • Quick and easy assembly: No need to pre-drill, the screw creates its own path through the material.

  • Time and cost savings: Only one tool is needed for fastening, with no additional accessories.

  • Perfect fit: No misalignment between the parts to be assembled, guaranteeing precise fastening.

  • Enhanced safety: No need for self-locking washers or other additional safety features.

  • Versatile use: Suitable for a variety of materials, including sheet metal, aluminum, PVC and certain plastics.

Self-drilling screw applications

These screws are widely used in various fields:

  • Building: Installation of metal cladding, light structures and framing.

  • Automotive: assembly of thin metal components.

  • Domestic appliances: Fastening of internal and external parts.

  • DIY: Domestic projects requiring solid metal fasteners.

  • Industrial plants: Fastening metal components in production lines.

Technical specifications

Self-drilling screws are distinguished by the following features:

  • Drill point: Allows material to be drilled without the need for a drill bit.

  • Triangular thread: provides optimum anchorage in thin materials.

  • Different heads available: Countersunk head for flush finish, hexagonal head for reinforced clamping.

  • Anti-corrosion treatment: Protects against moisture and rust for outdoor applications.

  • Manufacturing materials: Zinc-plated steel for indoor use, stainless steel for exposed outdoor environments.

How to choose a self-drilling screw

To choose the right self-drilling screw, consider the following criteria:

  1. Thickness of materials to be joined: Screw length should correspond to the total thickness of the parts.

  2. Head type: Countersunk head for aesthetic appeal, hexagonal head for better grip.

  3. Coating: Zinc on the inside, stainless steel on the outside.

  4. Thread type: Full thread for better hold or partial thread for flexible assembly.

  5. Mechanical resistance: Select screws adapted to the load to be supported.

Tips for successful fastening

To ensure optimum fastening with your self-drilling screws, follow these tips:

  • Use an electric screwdriver with adjustable torque to avoid damaging materials.

  • Make sure the screw is perpendicular to the surface for accurate drilling.

  • Don't overtighten to avoid distorting the assembled parts.

  • Choose stainless steel screws for outdoor environments exposed to humidity.

Order your self-drilling screws from TDI

Discover our wide range of self-drilling screws and benefit from professional-quality products, available in different sizes to suit all your projects. Simplify your fasteners today with our reliable, cost-effective solutions!


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