SELF-DRILLING SCREW — PRODUCT INTRODUCTION

Self-drilling screws, also known as self-drilling tapping screws, drill-tail screws, or SDS fasteners, are high-efficiency fasteners that combine drilling, tapping, and fastening in a single operation. The tail is designed with a drill-point structure similar to a twist drill bit, allowing direct drilling through metal sheets, steel structures, or hard materials without the need for pre-drilling or tapping. Powered by electric tools, the screw completes drilling, thread forming, and fastening in one step, significantly reducing construction time and lowering labor costs. These fasteners are widely used in steel structures, colored steel roofing, light steel framing, metal roofing systems, sheet metal fabrication, home appliance manufacturing, and more.

I. PRODUCT FEATURES

Self-drilling and self-tapping — one step, done right:
The drill-point tip requires no auxiliary machining; it can drill directly through metal sheets or hard materials and form mating threads in the hole simultaneously, achieving “one drill, one fix.”

Extremely high construction efficiency:
Compared with traditional workflows of pre-drilling followed by fastening, self-drilling screws combine drilling, tapping, and fastening into a single operation, maximizing time savings and improving project efficiency.

Strong, reliable, and vibration-resistant:
Self-drilling screws offer superior pull-out resistance and clamp load retention compared with standard screws. Once fastened, the joint provides strong clamping force with high preload, remaining securely fastened over extended use.

Versatile materials and optional corrosion resistance:
Available primarily in carbon steel and stainless steel. Carbon steel products are typically finished with zinc plating, colored zinc, Dacromet, or blue-white zinc coatings. Stainless steel options (such as SUS410, SUS304) achieve high hardness and excellent corrosion resistance after heat treatment, making them suitable for outdoor and humid environments.

II. PRODUCT ADVANTAGES

Fewer operations, lower labor costs:
No pre-drilling or tapping required — one step completes three operations, significantly shortening the construction cycle and reducing labor costs.

High hardness, powerful drilling capability:
After carburizing heat treatment or选用可热处理材质 such as SUS410, the drill point achieves a surface hardness of HV580–HV750 or above. The screw can easily penetrate steel plates, colored steel tiles, and other hard materials with strong drilling capacity and high resistance to breakage.

Excellent corrosion resistance:
Carbon steel products treated with colored zinc, blue-white zinc, Dacromet, or other coatings meet varying corrosion resistance requirements. Stainless steel products rely on the inherent properties of the material for long-term rust prevention, making them ideal for outdoor, humid, and corrosive environments.

Complete specifications, wide applicability:
Common diameter sizes include Φ4.2, Φ4.8, Φ5.5, and Φ6.3mm; lengths are customizable upon request.

III. APPLICATION AREAS

Self-drilling screws are widely used across the following industries:

Steel structures and construction engineering: Fastening of colored steel tiles to angle steel, channel steel, and I-beam steel structures; installation of light steel joists, metal roofing, and metal curtain wall systems.

Metal sheet fastening: Joining of galvanized steel sheets, plain steel sheets, aluminum doors and windows, PC sheets, and other thin metal plate materials.

Home appliances and industrial manufacturing: Appliance assembly, electrical cabinet construction, shipping container fabrication, refrigeration equipment assembly, and related engineering.

Transportation and renewable energy: Automotive bodywork, railway facilities, solar photovoltaic power plants, solar energy equipment installation, and related applications.

Renovation and decoration: Signage, construction fencing, indoor and outdoor finishes, stair handrails, and related installation projects.