Carbon Steel Self-Drilling Screws
Product Overview
This Phillips Countersunk Self-Drilling Screw is a self-drilling and self-tapping fastener designed for efficient metal plate connection, featuring a color zinc surface treatment. It integrates drilling, tapping, and fastening into one, requiring no pre-drilling and completing the fixation in a single operation. It is widely suitable for thin plate fastening in construction, sheet metal, and electromechanical industries, balancing efficient construction with long-term anti-rust capability.
Product Applications
Steel Construction: Fixing color steel roof tiles and wall panels, installing light steel keel partition walls, and connecting photovoltaic mounts to purlins.
Sheet Metal & Electromechanical Industry: Assembly and fixation of equipment casings, home appliance shells, and aluminum door/window frames.
Transportation & Containers: Fast connection of metal thin plates for cargo containers and automotive body accessories.
General Hardware Scenarios: Composite fixation of various low-carbon steel plates, galvanized sheets, and wood components, meeting various thin plate fastening needs for indoor and outdoor use.
Product Features
Self-Drilling & Tapping, Efficient & Labor-Saving: Features a hardened drilling edge, eliminating the need for pre-drilling, completing drilling and fastening in one step, significantly improving efficiency.
Countersunk Design, Flush & Aesthetic: The Phillips countersunk head sits flush with the workpiece surface, leaving no protruding edges to snag, and is compatible with standard bits for stable transmission that resists slipping.
Color Zinc Coating, Rust-Resistant & Durable: Electro-galvanized + color passivation process with excellent salt spray rust resistance, capable of handling outdoor moisture and mild corrosion.
Comprehensive Specifications: Available in multiple lengths from 25-65mm, meeting the fixation requirements for different plate thicknesses.
| Material | Carbon Steel |
| Surface Treatment | Color Zinc |
| Head Type | Countersunk Head |
| Drive Type | Phillips Recess |
| Thread Type | Full Thread |
| Screw Diameter | Approx. 4.8mm |
| Screw Length | Optional (25mm to 65mm) |
| Screw Type | Self-Drilling Screw |
| Corrosion Resistance | Medium (Suitable for indoor/outdoor humid environments) |
| Compatible Tools | Phillips Screwdriver or Power Tool |

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malingfei@linghongscrew.com

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