Bi-Metal Screw

A bi-metal screw is a high-performance fastener that combines the advantages of two different metals: stainless steel for excellent corrosion resistance, and carbon or alloy steel for superior strength, hardness, and drilling capability. This design is ideal for applications requiring penetration through stainless steel plates or other high-hardness materials, while ensuring strong fastening power and long-term durability.

Screw King's bi-metal self-drilling screws feature a composite structure of stainless steel in the upper section and medium-carbon alloy steel in the drill point. This combination delivers outstanding corrosion resistance, high mechanical strength, and powerful drilling ability. Depending on the drill length, the product can penetrate steel plates up to 30 mm thick, providing stable and reliable fastening even under heavy-load conditions.

In addition, advanced high-frequency induction hardening technology is applied to further enhance the surface hardness of the drill point, while preserving the original high torque and tensile strength of the stainless steel section. This makes the screws particularly suitable for long-term structural fastening and demanding construction environments.

As a professional self-drilling screw factory in Taiwan, Screw King offers a wide range of head types, including hex washer head, flange head, AS3566 head, flower head, truss head, pan head, oval head, bugle head, flat washer head, small flat head, flat head, wafer head, cheese head, and more. Customized specifications are also available upon request.Please feel free to contact us for further information.

• Bi-metal composite structure
  Combines stainless steel with alloy materials, delivering both strength and durability.
• High penetration capability
  Easily drills through steel plates up to 30 mm, ensuring fast, stable installation and significantly improving work efficiency.
• Excellent corrosion and weather resistance
  Designed for harsh environments such as humid, coastal, and outdoor conditions, maintaining stable performance over long-term use.
• Superior mechanical strength
  Enhanced by advanced high-frequency induction hardening technology, providing high tensile strength, high torque, and outstanding durability to meet heavy-load applications.
• OEM/ODM customization services
  Available for customized head types, dimensions, surface treatments, and branded packaging, offering complete OEM/ODM manufacturing solutions tailored to customer needs.

Bi-metal screws are widely used across industries that demand high-performance fastening solutions:

• Construction projects: Ideal for wooden structures, outdoor installations, and general building applications requiring durability and stability.
• Industrial equipment: Reliable for assembling and securing metal components under heavy mechanical loads.
• Furniture manufacturing: Suitable for connecting wood and metal materials, ensuring long-lasting strength in furniture production.
• Special environments: Perfect for coastal areas, humid regions, and applications requiring superior corrosion resistance and weather durability.