

Material:
Screw Material: Bi-metal (e.g., Carbon Steel + Stainless Steel or Alloy Steel)
Washer Material: Aluminum Composite Washer (Optional)
Screw Diameter: M6, M8, M10, etc.
Screw Length: 20mm, 25mm, 30mm, 40mm, etc.
Thread Type: Double Thread / Single Thread
Head Type: Hex Flange Head / Round Head, etc.
Drilling Tail Length: Suitable for steel plate thickness from 0.8mm to 6mm
Surface Treatment:
Galvanized
Ruspert Coating
Mechanical Properties | |
Tensile Strength: | 800-1200 MPa |
Shear Strength: | 600-1000 MPa |
Hardness: | Core Hardness: HRC 30-45 Surface Hardness: HRC 45-55 |
Applications:
Used for fastening metal sheets, steel plates, sandwich panels, and other construction materials
Suitable for metal roofing, walls, and industrial equipment installation
Widely used in construction, automotive, energy, and other industries
Features:
Self-drilling design, easy installation, no pre-drilling required
High corrosion resistance, suitable for outdoor or harsh environments
High tensile strength and shear strength, ensuring long-term stability
Excellent drilling capacity, suitable for various thicknesses of metal sheets









