Self-Drilling Screws
Widely used in steel structure engineering, roof panel installation, color steel plates, sandwich panels, doors and windows, ventilation ducts, solar brackets, mechanical equipment, and construction engineering.

Product Introduction
Self-Drilling Screws are high-efficiency fasteners that integrate drilling, tapping, and fastening into one. The screw tail features a drill point that can directly penetrate metal sheets, steel structures, and other materials without pre-drilling, greatly improving construction efficiency and reducing installation costs.
Widely used in steel structure engineering, roof panel installation, color steel plates, sandwich panels, doors and windows, ventilation ducts, solar brackets, mechanical equipment, and construction engineering.
Product Features
✔ No pre-drilling required, improving installation efficiency
✔ Drilling, tapping, and locking completed in one step
✔ Fast installation, saving labor costs
✔ Sharp threads, secure locking, not easy to loosen
✔ Made of high-strength materials, strong load-bearing capacity
✔ Rust-proof and corrosion-resistant, suitable for indoor and outdoor environments
✔ Can be equipped with EPDM waterproof washers for excellent sealing and leak prevention
Product Specifications
Product Name
Self-Drilling Screw
Standard
DIN, ISO, ANSI, ASME, or customized according to customer drawings
Size Range
ST2.9 – ST6.3
Length
9.5mm – 300mm
Material
- Carbon Steel (C1022A)
- Stainless Steel 304
- Stainless Steel 316
Heat Treatment
Carburizing and quenching
Hardness
Complies with international standards
Surface Treatment
- Zinc Plated
- Yellow Zinc Plated
- Mechanical Galvanized
- Ruspert Coating
- Dacromet
- Geomet
- Hot Dip Galvanized
- Black Phosphate
Drive Type
- Phillips
- Hex Head
- Torx
- Square Drive
Product Types
- Hex Head Self-Drilling Screw
- Pan Head Self-Drilling Screw
- Countersunk Head Self-Drilling Screw
- Wafer Head Self-Drilling Screw
- Truss Head Self-Drilling Screw
- Roofing Screw with EPDM Washer
- Wing Self-Drilling Screw
- Bi-Metal Self-Drilling Screw
Common Drill Point Types
- #1 Drill Point
- #2 Drill Point
- #3 Drill Point
- #4 Drill Point
- #5 Drill Point
Different drill point types can be selected based on steel plate thickness.
Application Areas
- Steel Structure Construction
- Roofing & Cladding
- Sandwich Panels
- Metal Buildings
- HVAC Systems
- Solar Mounting Systems
- Curtain Wall Systems
- Aluminum Profiles
- Industrial Equipment
- Prefabricated Buildings
Product Advantages
High Efficiency
Drilling, tapping, and fastening are completed simultaneously, greatly reducing installation time.
Excellent Drilling Performance
Sharp drill point quickly penetrates steel plates, reducing installation resistance.
Secure Locking
Precision thread design ensures firm locking and prevents stripping.
Superior Corrosion Resistance
Multiple surface treatment options available, suitable for humid, high salt spray, and other harsh environments.
Customization Support
Custom sizes, materials, head types, surface treatments, and packaging available upon request.
Quality Control
- Raw material inspection
- Dimensional inspection
- Hardness testing
- Drilling performance testing
- Torque testing
- Salt spray testing
- Coating thickness inspection
- Full traceability throughout the process
Packaging
- 100 pcs / Box
- 200 pcs / Box
- 500 pcs / Box
- 1000 pcs / Box
- Small Box + Carton
- Bulk Packing
- Pallet Packing
- OEM Packaging Available











































