Hex Head Self-Drilling Screws
Product Overview
This hexagon cross recess self-drilling screw is a high-performance fastener specifically designed for efficient metal connection applications. It integrates the three functions of drilling, tapping, and fastening into one unit, enabling direct penetration and fastening of substrates such as thin steel sheets, color steel sheets, and aluminum alloy profiles without pre-drilling. Combined with the Ruspert eco-friendly coating, it offers installation convenience, structural stability, and long-lasting corrosion resistance, making it widely suitable for industrial, construction, outdoor engineering, and various other scenarios.
Product Applications
Steel structures and construction engineering: Fastening of purlin connections and wall panels in color steel tile roofing and steel structure workshops, requiring no pre-drilling with high installation efficiency, and the coating's strong weatherability makes it suitable for long-term outdoor use.
Photovoltaic and outdoor curtain wall engineering: Profile connections for photovoltaic brackets and outdoor aluminum alloy curtain walls, capable of resisting outdoor sun, rain, and coastal salt spray corrosion, while providing secure fastening to ensure long-term project safety and stability.
Mechanical and electrical equipment and rack assembly: Assembly of metal frames, cabinets, and enclosures for mechanical and electrical equipment; the dual-drive design adapts to different installation scenarios, and high locking force prevents screw loosening caused by equipment vibration during operation.
General metal processing and installation: Universal connections for aluminum alloy profiles and thin steel sheet components, requiring no complex pre-treatment, offering high efficiency and convenience, with rust resistance meeting most indoor and outdoor metal connection requirements.
Product Features
Efficient installation: Equipped with a quenched drill point, it penetrates metal sheets directly without pre-drilling; the hexagon + cross dual-drive design accommodates multiple tools, making construction convenient and efficient.
Reliable fastening: Integrated flange increases the load-bearing area, while the coarse thread provides deep engagement and strong pull-out resistance, effectively preventing loosening and thread stripping.
Weather-resistant and rust-proof: The Ruspert coating offers excellent salt spray resistance, capable of withstanding outdoor moisture and salt spray corrosion, and resists rusting over long-term use.
| Material | Carbon steel |
| Surface treatment | Ruspert silver |
| Head type | Hexagon head |
| Slot type | External hexagon, cross recess |
| Thread type | Full thread |
| Screw diameter | Approx. 4.8mm |
| Screw length | 25mm |
| Screw type | Self-drilling screw |
| Corrosion resistance | High (suitable for coastal / high-humidity and highly corrosive environments) |
| Applicable tools | Socket/wrench/cross screwdriver installation |

+86 15856352820

malingfei@linghongscrew.com

No. 56, Baishizhan Road, Economic Development Zone, Langxi County, Xuancheng City, Anhui Province, China
