These continuous-fire hexagonal self-drilling screws are made of carbon steel with zinc coating, featuring high hardness, self-drilling penetration, and an anti-slip hexagonal head for efficient installation.
Our products combine stable material quality, consistent manufacturing precision, and reliable performance in real-world applications, helping customers achieve efficient installation, long service life, and dependable supply across different usage scenarios.
The selection of fasteners depends on the material type, load requirements, installation method, and working environment. Matching these factors helps ensure the strength and long-term performance of the fasteners. Please contact us, and I will help you plan a suitable solution.
Long-term partnerships help stabilize supply chains, improve efficiency, and create mutual growth through trust, experience, and continuous cooperation.
External Hex Self Drilling Screws
External Hex Self Drilling Screws are made from high-quality carbon steel, designed for fast and reliable fastening without the need for pre-drilling. The external hex head allows high torque installation with standard tools, ensuring efficient and secure assembly. The color zinc surface provides corrosion resistance and a professional finish suitable for demanding industrial applications.
Material: Carbon steel
Sizes:
M5.0 × 20mm
M5.0 × 38mm
M5.0 × 65mm
M4.5 × 95mm
Head type: External hex
Surface finish: Color zinc
Type: Self drilling screw
Self-drilling design eliminates the need for pre-drilling, saving time and labor
External hex head allows high torque and easy installation with standard tools
Carbon steel construction ensures strength, durability, and long service life
Color zinc plating provides corrosion protection and a professional appearance
Suitable for heavy-duty applications requiring strong and reliable fastening
Widely used in the construction industry, petrochemical industry, shipbuilding, high-speed rail construction, and power transmission towers. Ideal for industrial projects and large-scale structural assemblies.
Engineered for industrial reliability, these screws provide strong, efficient, and secure fastening in demanding environments, making them the preferred choice for professional construction and manufacturing projects.
We are a modern manufacturing enterprise with over twenty years of industry experience, specializing in the research, development, production, and supply of fastener products.
Our fastening products are developed with a focus on real-world applications, manufacturing consistency, and long-term usability. By combining material quality, controlled production processes, and application-driven design, we deliver solutions that support stable performance across diverse industries and markets.
Stable manufacturing processes ensure uniform performance across batches and long-term orders.
Products are designed based on real usage scenarios, improving efficiency and reducing installation issues.
Carefully selected materials support strength, durability, and stable fastening performance.
Controlled tolerances and standardized production ensure compatibility with tools and systems.
Multiple finishes and specifications support different environments and market requirements.
Scalable production capacity ensures reliable delivery for both standard and customized orders.
Customer feedback is a direct reflection of product quality and service reliability. Over the years, we have built long-term partnerships with customers across different industries and markets. Their continued trust and repeat cooperation motivate us to maintain high standards in both manufacturing and service.
If you are looking for reliable fastening products, customized solutions, or long-term supply support, please leave your information below. Our team will review your request carefully and provide practical feedback based on your needs.
