Anhui Linghong Hardware Technology Co., Ltd. is China Custom Carbon Steel Self-Drilling Screws Manufacturers and Carbon Steel Self-Drilling Screws Suppliers, founded in 2017, covering an area of 30 mu with 12,600 square meters of standardized workshops and office buildings. Formerly known as Shanghai Linghong Fasteners Co., Ltd., the company has inherited its core management and production backbone team, and follows the mature operation system formed through 16 years of steady development of Shanghai Linghong. We offer Carbon Steel Self-Drilling Screws for sale.
The company is equipped with more than 80 sets of production equipment, with a stable monthly capacity of approximately 500 tons. It specializes in the production of a full range of screws, including wood screws, chipboard screws, drywall screws, self-drilling screws, self-tapping screws, plasterboard screws, wallboard screws, corrugated screws, and other products. The company has a professional-quality management team and is equipped with precision testing instruments, including metallographic polishing machines and Rockwell hardness testers. Through strict control over first-piece inspection, in-process inspection, and the whole ex-factory process, it ensures the qualified quality of each batch of products with strong quality inspection capabilities. Meanwhile, the company has established a complete packaging system and an experienced management team, adopting a production model of "intelligent and mechanized production as the mainstay, supplemented by manual work". Adhering to excellent quality and a good reputation, the company provides customers with cost-effective, high-quality products.
With over 20 years of deep engagement in the fastener industry, Anhui Linghong Hardware Technology Co., Ltd. upholds the business philosophy of "Quality First, Integrity-Based", and is a comprehensive enterprise integrating design, development, production, and sales. Relying on over 20 years of accumulated production management experience and foreign trade export strength, the company has passed ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System certifications, and established mature overseas sales channels. At present, the company exports 40 to 50 containers to Australia and about 10 containers to Europe and Japan every month, with annual sales exceeding 200 million RMB. The company sincerely welcomes customers at home and abroad to contact us for business negotiations and win-win cooperation!
A 4.2 mm self-drilling screw that cuts a clean hole through a 2 mm steel bracket will spin in place on a 0.8 mm cladding panel, and the same screw that holds a dry indoor ceiling together can rust to the surface within a season on a coastal roof. Neither failure is a manufacturi...
READ MOREA technician presses the point of a pan-head screw against a 1.5 mm galvanised bracket, leans into the driver, and squeezes the trigger. Two seconds later the joint is tight. No nut, no weld and no pre-cut thread were involved: the screw created its own thread inside the steel a...
READ MOREA production manager once asked us to replace a bugle-head wood screw with a countersunk screw because the drawing said "flat head." The first trial run failed: the flat-head screws sat proud, split several panels, and slowed the line until the pilot hole was changed. That one h...
READ MOREWe are Anhui Linghong Hardware Technology Co., Ltd., a China-based manufacturer and supplier of carbon steel self-drilling screws. Our screws combine drilling, tapping, and fastening in one operation, eliminating pre-drilling and reducing installation time on metal building, roofing, and industrial assembly lines.
With over 80 sets of production equipment and a monthly capacity of 500 tons, we supply standard and custom self-drilling screws to distributors, contractors, and OEMs worldwide. Our factory in Anhui Province operates under ISO 9001, ISO 14001, and ISO 45001 certified systems, ensuring consistent quality from raw material to finished batch.
We manufacture carbon steel self-drilling screws in nominal diameters from ST2.9 to ST6.3, with lengths tailored to your substrate thickness. The range includes:
Each head style is available with Phillips, Pozidriv, square, or hex drive options, and can be supplied with or without wings for wood-to-metal applications.
We start with high-quality carbon steel wire, typically 1022A, which is cold headed to shape the head and drill point. The screws then undergo carburizing and quenching to achieve a hard, wear-resistant case while retaining a tough core. This balance is critical for the drill point to penetrate steel without breaking and for the threads to resist stripping.
Our standard tensile strength is ≥450 MPa, suitable for fastening into low-carbon steel and aluminum up to 6 mm thick. For more demanding environments, we can adjust case depth and hardness to meet your specification.
To match your service environment, we offer a range of surface treatments:
| Coating | Typical Use | Color/Finish |
|---|---|---|
| Zinc Plated (Yellow or Clear) | Interior dry environments | Yellow, blue, or clear |
| Blue Painted/Coated | Quick identification, light corrosion resistance | Blue |
| Ruspert (Dacromet-type) | Outdoor and high-corrosion environments | Silver/grey |
| EPDM Washer Assembly | Roofing and cladding for watertight seal | Various washer colors |
We also offer custom colors and special coatings on request. Our in-house packaging system supports bulk boxes, retail cartons, or custom labeling for distribution.
Carbon steel self-drilling screws are engineered for fastening into steel sheet, aluminum, and other metals up to 6 mm thick. Common applications include:
They are not recommended for high-strength steel or concrete. For wood-to-metal connections, we offer screws with wings that ream the wood hole, preventing thread engagement before metal contact.
Our quality team follows a full-process control plan: first-piece inspection, in-process patrol, and final ex-factory testing. We use metallographic polishing machines and Rockwell hardness testers to verify case depth and core hardness. Each batch is traceable, and we provide material test certificates and inspection reports on request.
We are certified to ISO 9001 for quality management, ISO 14001 for environmental management, and ISO 45001 for occupational health and safety. These systems ensure consistent production and responsible manufacturing.
As a custom manufacturer, we can adjust screw dimensions, head styles, drive types, point geometry, and coatings to your drawings or samples. Our engineering team reviews your application to recommend the optimal configuration, including drill point length and thread pitch.
We support OEM and ODM projects, with packaging and labeling tailored to your market. Our export experience includes monthly shipments of 40–50 containers to Australia and about 10 containers to Europe and Japan, ensuring reliable logistics and documentation.
To prepare an accurate quotation and sample, please provide the following details:
With this information, we can confirm the correct drill point, thread design, and heat treatment to ensure reliable installation and long-term performance.
Self-drilling screws have a drill point that creates its own hole, so no pre-drilling is needed. Self-tapping screws require a pre-drilled pilot hole. Our carbon steel self-drilling screws are designed for direct installation into metal up to 6 mm thick.
Yes, we offer custom colors and coatings, including blue, yellow zinc, Ruspert, and other finishes. Provide a RAL code or sample, and we will match it.
MOQ depends on size and coating. For standard sizes, we can start from a few cartons for samples. For production orders, we typically require a quantity that justifies setup, but we work with you to meet project needs.
Yes, we can provide material certificates, hardness test reports, and other inspection documents. Our quality system ensures traceability for each batch.
We use automated production lines and conduct first-piece and in-process inspections. Our quality team uses precision instruments to verify hardness and case depth, and we perform final random sampling before packing.
Explore our full range of Custom Carbon Steel Self-Drilling Screws Suppliers or view related Self-drilling Screws and Wood Screw categories.
Our portfolio also includes Products for applications with different operating ranges, interfaces or integration requirements.
+86 15856352820
malingfei@linghongscrew.com
No. 56, Baishizhan Road, Economic Development Zone, Langxi County, Xuancheng City, Anhui Province, China
English
Español
Deutsch
عربى
