Anhui Linghong Hardware Technology Co., Ltd. is China Custom Countersunk Head Self Tapping Screws For Metal Manufacturers and Countersunk Head Self Tapping Screws Factory, 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 Countersunk Head Self Tapping 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 MOREAs a dedicated Countersunk Head Self-Tapping Screws manufacturer, Anhui Linghong Hardware Technology Co., Ltd. produces flat-head self-tapping screws that sit flush with the workpiece surface. Our range covers carbon steel, stainless steel, and specialty coated versions for applications where appearance, safety, and reliable thread-forming matter.
We combine a 90° tapered countersunk head with a self-tapping thread and sharp point, allowing direct installation into wood, MDF, plastic, and thin sheet metal without pre-tapping. This design distributes stress evenly, reduces material cracking, and eliminates protruding heads that can snag or interfere with assembly. Our factory in Anhui, China, operates over 80 production lines with a stable monthly capacity of 500 tons, serving OEM and ODM projects across Australia, Europe, Japan, and North America.
We offer a complete line of countersunk self-tapping screws, each tailored to specific substrate and performance requirements. The table below summarizes our standard configurations and typical uses.
| Type | Material & Finish | Drive & Point | Typical Applications |
|---|---|---|---|
| Standard Countersunk | Carbon steel, zinc plated (blue/white, yellow, black) | Phillips, Pozidriv, sharp point | Furniture, cabinets, interior trim |
| Stainless Steel (A2/A4) | SS304, SS316, plain or passivated | Phillips, Torx, sharp point | Outdoor, marine, high-corrosion environments |
| Ribbed / Nail Point | Carbon steel, Cr6 zinc, Ruspert | Torx, ribbed shank, nail point | Light-gauge steel, metal-to-wood, window frames |
| Semi-Countersunk (T17) | Carbon steel, triple-stage blue-white zinc | Phillips, T17 point | Chipboard, MDF, plastic boards |
| Hinge Screws | Brass, bronze color, zinc alloy | Phillips, countersunk | Door hinges, cabinet hardware |
For projects requiring a specific head angle, thread pitch, or point geometry, we produce custom countersunk self-tapping screws to your drawing or sample. Our engineering team reviews the substrate hardness, thickness, and driving method to recommend the optimal configuration.
We understand that a countersunk head is not just about aesthetics—it affects joint strength and assembly safety. Our screws are manufactured with precise head angle tolerance (typically 90°±2°) to ensure flush seating and consistent countersink depth. We offer multiple drive recesses, including Phillips, Pozidriv, Torx, and square, to match your tooling and reduce cam-out during high-speed driving.
Thread forms are selected based on the substrate: coarse threads for softwood and plastic, fine threads for metal and hardwood. For thin sheet metal, we provide self-drilling variants with a drill point that eliminates pre-drilling. For light-gauge steel, ribbed shanks increase pull-out resistance and reduce installation torque.
Our factory supports a wide range of finishes—zinc plating (blue, white, yellow, black), Cr6 passivation, Ruspert coating, and wax lubrication for consistent driving. Stainless steel grades A2 (304) and A4 (316) are available for corrosive environments. We also offer color matching for architectural applications.
Quality is embedded in every batch. We operate under ISO 9001, ISO 14001, and ISO 45001 certified management systems. Our in-house lab is equipped with metallographic polishing machines and Rockwell hardness testers, enabling us to verify case depth, core hardness, and surface integrity. Each production run undergoes first-piece inspection, in-process patrol checks, and final random sampling before packaging.
We test for:
Certificates of conformance and material test reports are available on request. For critical applications, we can provide full traceability from raw material to finished lot.
With over 80 sets of production equipment, our monthly output is approximately 500 tons. This capacity allows us to handle both large-volume container orders and smaller custom runs. We export 40–50 containers to Australia and about 10 containers to Europe and Japan each month, demonstrating our logistics reliability.
Standard sizes range from #4 to 1/4 inch in imperial and 3.0 mm to 8.0 mm in metric, with lengths from 6 mm to 150 mm. We can accommodate non-standard lengths and diameters based on your requirements. Lead times vary by order size and finish; we provide a confirmed schedule with every quotation.
Countersunk self-tapping screws are designed for power tool installation and automated assembly lines. Our screws are compatible with standard bit holders and collated strips for screw-feeding systems. We offer collated options for drywall and decking applications, improving installation speed and reducing operator fatigue.
For automated environments, we ensure consistent head geometry and drive depth to prevent bit slippage and jams. We can also supply screws with wax or micro-encapsulated lubricant to reduce driving torque and extend tool life.
We provide a complete packaging system, from small retail boxes to bulk cartons and palletized loads. Options include:
Each shipment includes packing lists, quality certificates, and, if required, fumigation certificates for wooden pallets. We support drop-shipping to multiple destinations and can coordinate with your freight forwarder.
To prepare an accurate quotation and sample, please provide the following details:
If you have a drawing or sample, send it to our engineering team. We will match or reverse-engineer the screw and provide a technical datasheet for your approval before mass production.
With over 20 years of fastener industry experience, we bring a mature production system inherited from Shanghai Linghong Fasteners. Our factory in Anhui is self-owned, allowing us to control quality and cost at every stage. We are not a trading company—we are the manufacturer, ensuring direct communication and faster problem-solving.
Our team of 70+ employees includes dedicated quality and R&D staff. We invest in new product development each year, responding to market trends and customer feedback. Whether you need a standard countersunk screw or a complex custom design, we provide engineering support from prototype to full-scale production.
Countersunk screws have a flat, tapered head that sits flush with the surface when installed in a pre-drilled countersink. Pan head screws have a rounded top that protrudes. Countersunk heads are preferred when a smooth, snag-free surface is required, such as in furniture or paneling.
Yes, we offer self-drilling countersunk screws with a drill point that can penetrate steel up to 1.5 mm thick. They are available with EPDM washers or sealing rings for weatherproofing, though the washer adds a slight protrusion. For flush applications, we recommend a countersunk screw with a sealing compound.
For standard sizes and finishes, production typically takes 2–3 weeks after sample approval. Custom designs may require additional time for tooling and testing. We provide a confirmed lead time with your quotation and keep you updated throughout production.
Yes, we offer free samples for standard products. For custom designs, we may charge a nominal sample fee, which is deducted from the final order. Samples are shipped via express courier and typically arrive within 5–7 business days.
Our factory is certified to ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health and Safety). These certifications are regularly audited and reflect our commitment to consistent quality and responsible manufacturing.
Yes, we can provide custom finishes including colored zinc plating, Dacromet, Geomet, and powder coating. For outdoor applications, we offer Ruspert coating for enhanced corrosion resistance. Send us a RAL or Pantone code, and we will match it as closely as possible.
Our portfolio also includes Products, Wood Screw, Carbon Steel Wood Screws 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
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