2025.10.14 Precision in Every Turn. Strength in Every Structure.

These screws represent the perfect union ofdurability and efficiency, eliminating the need for pre-drilling while ensuring consistent penetration into metal substrates such as aluminium, Aluzinc, and galvanized steel.

Product Overview

• Material Options: Stainless Steel A2 (304) / A4 (316)

• Diameter Range: 3.9 mm – 6.3 mm (#8 – #14)

• Length Range: 13 mm – 150 mm (1/2" – 6")

• Head Types: Hex Washer Head, Countersunk Head, Pan Head, Truss Head

• Drive Options: Phillips, Square, Hex, or Torx Drive

• Surface Finishes: Polished, Passivated, Climashield®, or Ruspert® Coating

• Washer Options: EPDM Bonded, Aluminum-Backed, or Customized Assemblies

• Standard Compliance: DIN, ISO, IFI, and JIS Standards
  

Key Features & Advantages

🔹 Self-Drilling Efficiency

• Integrated drill point eliminates pre-drilling, reducing installation time.

• Consistent hole quality even through thick metal sheets.

• Lower driving torque ensures safer and faster assembly.

🔹 Corrosion Resistance for Harsh Environments

• A2 (304) stainless steel provides excellent resistance to oxidation and humidity.

• A4 (316) stainless steel offers superior protection against saltwater, acids, and chemicals — ideal for coastal and industrial zones.

🔹 Enhanced Performance Under Pressure

• Precision-formed threads maximize grip and tensile strength.

• Proven performance through drilling, torsion, and Kesternich corrosion tests to ISO standards.

• Stable installation at up to 2000 RPM for efficient site work.

🔹 Leak-Proof Sealing System

• EPDM bonded washer ensures a secure, water-tight seal.

• Resists UV radiation, ozone, and temperature fluctuations.
  

Applications

• Roofing Construction: Fixing metal roofing sheets, purlins, and framing structures.

• Cladding & Facade Systems: Secure attachment of architectural panels and exterior surfaces.

• HVAC & Ducting Installations: Fast, vibration-resistant fastening for steel components.

• Industrial & Coastal Engineering Projects: Long-lasting fastening performance in corrosive environments.
  

Why Choose DD Fasteners?

With over two decades of manufacturing excellence, DD Fasteners stands as a trusted partner for global fastening solutions. Every stainless steel self-drilling screw we produce undergoes comprehensive dimensional, mechanical, and corrosion testing to ensure long-term reliability and consistent performance.

We also offer OEM customization for global brands — including:

• Special head or drive designs

• Coating and color customization

• Pre-assembled washer options

• Packaging and private labeling solutions
  

📞 Partner with DD Fasteners Today
To explore our stainless steel self-drilling solutions and OEM programs, visit:
🌐 www.ddfasteners.com
📱 WhatsApp: +852 68409292
📧 Email: felixyung@ddfasteners.com

DD Fasteners — Where Innovation Meets Integrity.