Product Definition and Structural Features

Auto-drilling and self-tapping screws are threaded fasteners that combine drilling, tapping, and locking functions. Their specially designed screw tip allows for direct penetration into unpre-drilled metal, plastic, or thin sheet materials, enabling rapid assembly.

Main components include:

Drill Point: A special geometric design enables high-speed drilling, effectively reducing drilling resistance.

Thread Section: The deep pitch and sharp thread profile enable self-tapping, providing a tight lock and preventing loosening.

Head Type: Available in various styles, including hexagonal, pan, countersunk, and washer, to suit various assembly requirements.

Locking Feature: Thread self-locking or locking washers enhance vibration resistance and stability.

Surface Coating: Zinc, Dacromet, nickel, or stainless steel are commonly used for enhanced corrosion resistance.

This structure enables Self-Piercing Screws to complete drilling and tightening in one operation, significantly saving assembly time and labor costs. It is particularly suitable for industrial application scenarios that require rapid batch construction.

Product Advantages

Highly Efficient Installation

No pre-drilling or tapping is required; drilling and tightening can be completed in a single operation, significantly improving installation efficiency and making Thread-Forming Screw particularly suitable for automated assembly lines.

Powerful Drilling Performance

The precision-machined drill tip design delivers fast drilling speed and smooth cutting, capable of penetrating multiple layers of thin sheet metal or metal substrates of moderate thickness, while minimizing workpiece deformation and burrs.

Excellent Anti-loosening and Anti-vibration Performance

The self-locking thread design combined with high-precision molding ensures stability even in vibration and high-intensity environments, preventing loosening or peeling.

Excellent Corrosion Resistance

High-standard surface coatings such as galvanizing, Dacromet, and anti-fingerprint treatment effectively resist corrosion from moisture, salt spray, and chemical media.

Wide Compatibility

Tapping Fastener can be used to fasten a variety of materials, including steel structures, aluminum plates, stainless steel plates, plastics, and wood, meeting the diverse needs of various engineering applications.

Self-Drilling Self-Cutting Screw

Manufacturing Advantages

We possess a comprehensive fastener manufacturing system and automated production lines, integrating wire drawing, cold heading, heat treatment, and surface plating within our factory.

● Precision Mold Design and Forming Technology

Using CNC mold machining centers and automatic cold heading machines, we ensure the precise and consistent drill point angle, thread depth, and coaxiality of each Self-Drilling Self-Cutting Screw.

● Strict Quality Control

In-line inspection and sampling testing are implemented throughout the production process, including hardness, torque, salt spray testing, and dimensional inspection, ensuring product compliance with international standards such as ISO, DIN, ANSI, and GB.

● Flexible Customization Capabilities

We can customize different head shapes, thread lengths, drill point angles, and surface coatings based on customer drawings, samples, or application requirements to meet specific industrial assembly or project scenarios.

Production Process of Screw Terminal and Auto-Drilling and Self-Tapping Screw

Application Areas

Construction and Steel Structure Engineering	Self-Engaging Drilling Screw for Tapping Used for installing steel plates, purlins, light-gauge steel keels, and curtain walls, providing high-strength shear-resistant connections;
Photovoltaic and New Energy Mounting Systems	Suitable for fixing aluminum alloy brackets and metal components, offering long-term corrosion resistance;
Home Appliances and Sheet Metal Assembly	Used for assembling sheet metal parts such as air conditioners, washing machines, and electrical control boxes, offering convenient operation, stability, and reliability;
Automotive and Machinery Manufacturing	Self-Acting Drilling and Tapping Screw Used for assembling car bodies, chassis, and mechanical housings, offering outstanding vibration resistance;
Woodworking and Lightweight Construction	The special thread design enables efficient fastening in wood panels and composite materials.