Carbon Steel Self-Drilling Screws
Product Overview
The Button Head Self-Drilling Screw (Model: 8-18×12-32) is a self-drilling and self-tapping fastener specifically designed for the rapid connection of thin metal sheets and light steel components. The product utilizes a carbon steel base paired with a zinc/yellow (Z/Y) anti-rust coating. It combines efficient installation, stable locking, and basic rust-prevention capabilities, making it widely applicable for assembly tasks in construction, hardware, and electromechanical fields.
Product Applications
Color steel tile / profiled steel sheet installation (fixing roof and wall purlins).
Fixing light steel keel, billboards, and ventilation ducts.
Assembly of home appliance sheet metal and furniture hardware.
Connecting light steel structures, such as sunrooms and photovoltaic mounts.
Product Features
High Construction Efficiency: Eliminates the pre-drilling process, increasing installation speed by over 50% compared to standard self-tapping screws.
Strong Locking Performance: Features a drill-tail tip + coarse threads, enabling direct tapping after penetration, which resists slipping and loosening.
Broad Compatibility: Can penetrate steel plates, color steel plates, and aluminum alloy materials with a thickness of ≤6mm. Also suitable for mixed wood and metal connections.
Rust-Resistant & Durable: The yellow zinc coating provides basic anti-rust capability, suitable for humid and mildly corrosive environments.
| Material | Carbon Steel |
| Surface Treatment | Color Zinc |
| Head Type | Button Head |
| Drive Type | Phillips Recess |
| Thread Type | Full Thread |
| Screw Diameter | Approx. 4.2mm |
| Screw Length | Optional (12mm to 32mm) |
| Screw Type | Self-Drilling Screw |
| Corrosion Resistance | Medium (Suitable for humid, mildly corrosive environments) |
| Compatible Tools | Phillips Screwdriver or Power Tool |

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malingfei@linghongscrew.com

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