Zinc Plated Hex Flange Head Self Drilling Fasteners

Our screws are cost-effective engineering-grade fasteners professionally treated with full-body hot-dip galvanizing or electro-galvanizing process, combining integrated hex flange structure and high-hardness self-drilling performance, specially developed for large-scale conventional construction and outdoor anti-rust fastening scenarios. The overall surface forms a uniform and compact zinc coating after professional galvanizing treatment, which can effectively isolate oxygen, moisture and corrosive substances in the air, fundamentally preventing screw rusting and oxidation failure. Compared with ordinary untreated screws, it has far better weather resistance and can adapt to long-term outdoor wind, rain and sun exposure. The one-piece hex flange head integrates the screw head and pressure-bearing gasket, avoiding the problems of gasket loss, displacement and loosening of split structural screws. The large-area flange surface can evenly disperse locking pressure, effectively protecting light steel plates and decorative panels from sinking and deformation. The high-hardness self-drilling tip is precisely quenched and hardened, with strong cutting and penetrating ability, which can quickly drill through various light steel profiles, color steel plates and wood composite materials, completing drilling, threading and fixing in one step without pre-drilling, greatly improving the progress of large-scale engineering construction. The standard uniform threads have strong bite force and anti-loose performance, ensuring stable fastening strength. With excellent comprehensive performance and high cost performance, these galvanized drilling screws are universal essential fasteners for civil engineering, outdoor construction and factory maintenance projects.

Key Features

- Full-Body Galvanized Anti-Rust Layer: Dense uniform zinc coating, effective isolation of moisture and air, excellent anti-oxidation and anti-corrosion performance, long-term weather resistance.

- One-Piece Hex Flange Head: Integrated pressure-bearing structure without auxiliary gasket, uniform stress, stable fastening, effectively prevents substrate sinking and loosening.

- High-Hardness Self-Drilling Tip: Quenched and hardened drill tip, strong penetrating and cutting ability, one-step drilling and fixing, high engineering construction efficiency.

- Smooth Anti-Jam Threads: Galvanized smooth thread surface, reduces assembly friction, avoids rust jamming, convenient for later disassembly and maintenance.

- High Cost Performance: Stable anti-rust performance and reliable fastening strength, suitable for large-scale batch engineering use, high practicability.

- Wide Material Compatibility: Adaptable to light steel, color steel, wood boards and composite plates, versatile for various conventional construction scenarios.

Applications

- Outdoor building and exterior wall construction engineering

- Light steel structure and color steel plate fixing projects

- Civil decoration and large-scale batch fastening work

- Factory facilities and outdoor equipment maintenance fixing

- Conventional anti-rust and weather-resistant engineering scenarios