Self-Drilling Screw: High-Performance Fastener for Metal, Wood, and Composite Materials

Product Overview

Key Attribute Parameters

• Point Type:
  • Standard (118°–120° Angle): For mild steel (<3 mm thickness).
  • Aggressive (140° Angle): For hard steel, aluminum, or stainless steel (>3 mm).
  • Masonry Tip: Carbide-tipped for concrete/brick (rarely used; see self-tapping masonry screws).
• Thread Design:
  • Coarse Threads: For wood/composite materials (Type 17 threads for reduced splitting).
  • Fine Threads: For metal (ISO metric or UNF/UNC standards).
• Head Styles:
  • Hex, pan, truss, countersunk, or wafer (large diameter for anti-pull-through in thin materials).
• Shank: Smooth or reamed shank to prevent material damage. |
  | Size Range | - Diameter: 3 mm (No. 6) – 12 mm (No. 24).
  - Length: 12 mm (1/2") – 150 mm (6").
  - Custom Sizes: Available for specialized thicknesses (e.g., 75 mm for metal-to-timber connections). |
  | Standards Compliance | - ASTM F1254: Self-drilling screws for sheet metal.
  - ISO 14580: Self-drilling screws for structural steel.
  - AS/NZS 3566: Australian/New Zealand standard for roofing screws.
  - EN 14592: European standard for structural fasteners. |
  | Performance Ratings | - Drilling Capacity:
• Mild Steel: Up to 6 mm thickness (with 10 mm diameter screw).
• Stainless Steel: Up to 4 mm thickness.
• Shear Strength: Carbon steel: 50,000–80,000 psi; Stainless steel: 70,000–110,000 psi.
• Torque-to-Drive: Typically 8–40 N·m (varies by size and material). |
  | Temperature & Environment | - Standard: -20°C to +80°C.
  - Stainless Steel: -196°C to +400°C (suitable for high-temperature applications).
  - Coastal Use: 316 stainless or Dacromet-coated for saltwater resistance. |
  | Applications | - Construction: Roofing, metal framing, siding, HVAC ducting.
  - Industrial: Machinery assembly, trailers, storage racks.
  - Automotive: Chassis, body panels, truck beds.
  - DIY: Metal sheds, furniture, and repair projects. |
  | Packaging | - Bulk: 5 kg/10 kg boxes or plastic bins (for contractors).
  - Retail: Blister packs (25/50 pieces) with size labels.
  - Anti-Rust Packaging: Polyethylene bags with desiccant for long-term storage. |
  | Certifications | - CE, UL, and CSA approved for structural use.
  - ICC-ES ESR-3864 (for use in fire-rated assemblies).
  - RoHS/REACH compliant for eco-friendly markets. |
  | Minimum Order Quantity (MOQ) | 1,000 Pieces (standard sizes); 2,000 Pieces (stainless steel/Dacromet-coated). |
  | Delivery Time | 10–20 Days (standard); 25–40 Days (custom coatings/sizes). |
  | Customization | - Coatings: Color-matched (e.g., red, blue) for brand visibility.
  - Head Markings: Laser-engraved logos or part numbers.
  - Drill Tip Modifications: Custom angles for specific materials (e.g., 135° for hard aluminum). |

Key Selling Points for Global Markets

1. Time-Saving Design: Eliminates pre-drilling, reducing labor costs by up to 30% in metal construction projects.
2. Superior Corrosion Resistance: Dacromet and 316 stainless options meet 严苛 coastal (ASTM B117) and industrial (NACE MR0175) standards.
3. Multi-Material Versatility: Works on steel, aluminum, wood, OSB, and composite panels (e.g., Fiberon decking).
4. Structural Compliance: Meets building codes in North America (IBC), Europe (Eurocode 3), and Asia (GB/T 15856).
5. Eco-Friendly Options: Recyclable packaging and low-VOC coatings cater to green building certifications (LEED, BREEAM).

Common Misapplications to Avoid

• Over-Drilling: Do not use on materials thicker than the screw’s rated capacity (e.g., 6 mm steel for a 10 mm screw).
• Incorrect Tip for Material: Use 140° tips for hard metals and 118° for softer metals to prevent tip wear.
• Wood Only: For pure wood applications, consider self-tapping wood screws (no drill tip) to avoid unnecessary material damage.