Black Phillips Countersunk Head Wood Screws, Carbon Steel Self-Tapping Screws for Wood, Furniture & Construction
Manufacturing Process
• Multi Station Cold Heading Technology
• Intelligent Heat Treatment System
• Micron-Level Thread Rolling Process
• Fully Automatic Optical Sorting
• Environmentally Friendly Surface Treatment Line
• Metallographic And Mechanical Joint Laboratory
Quality Control System
• Raw Material Source Locking
• Furnace Number Batch Full Traceability
• Third Party Material Certification
• Process Parameters Open And Transparent
• Salt Spray Test Real Time Monitoring
• International Standard Compliance Declaration
Flexible Customization Capability
• Customizable head/slot Shapes
• Extreme Application Of Special Materials
• Breakthroughs In Extra Large/Long Specifications
• Integrated Assembly Of Components
• Customizable Surface Treatment Colors
• Personalized Packaging And Labeling
Technical Service
• On-Site Failure Analysis
• Selection Calculation And BOM Optimization
• Installation Tool Selection Guidance
• Inventory Management (VMI) Trusteeship
• Free Sample Making And Testing
• International Standard Translation And Interpretation
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High Tensile & Hardness Carbon Steel Material
Made of Q235 carbon steel with hardened treatment and black oxide finish. Compared to ordinary low-carbon steel screws, this product offers higher tensile strength (Grade 4.8 ≥400MPa, Grade 8.8 ≥800MPa) and increased hardness to prevent thread stripping or head breakage. When driving into hardwood or composite panels, its high strength ensures smooth penetration without deformation – strong and durable for heavy-load connections in furniture and construction.
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Metal Material for Tightening & Anti-Loosening
The carbon steel substrate is heat-treated for excellent elastic limit and torsional strength. The self-tapping sharp thread bites deeply into wood fibers during driving, creating a "female thread" locking effect. Metal material never ages or becomes brittle, maintaining secure fastening under long-term vibration or temperature changes (e.g., outdoor wood structures, movable furniture). High preload is retained after tightening for reliable, long-lasting connections.
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Long Service Life with High Wear Resistance
Black oxide finishing increases surface hardness and provides self-lubricating properties, reducing friction wear between the screw and wood during assembly. The countersunk Phillips head fully embeds into the wood surface, preventing tool slippage or head damage. Proven in durability tests, the threads withstand repeated driving and removal without significant wear. Compared to common zinc-plated wood screws, this product offers superior wear resistance and lower replacement frequency in outdoor or repetitive-use applications.
Application Scenarios
Industrial Capabilities
• Factory Area: 8,000 square meters
• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM
• Manufacturing : 70+ internationally advanced production lines
• Testing: 30+ sets of precision quality testing equipment
• Annual Output: Up to 50,000,000 tons
From Unprocessed Materials to Final Products
Our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and environmentally friendly surface finishing enable closed-loop manufacture from raw materials to finished goods. Because of inline optical sorting and a digital MES, each fastener meets stringent standards for strength, accuracy, and surface quality. You guarantee the best fasteners: dependable, efficient, and ecologically conscious.
Lab for Innovation:
Do you have any ongoing projects? Let's proceed now. Our growth is fueled by talent and diligence, and we are always looking for new concepts. Do you have a project underway? Let's proceed now.
From "Pain Point Diagnosis" to "Customized Implementation" throughout the entire cooperative process of research and development
We offer more than just traditional parts. From the beginning, our multicultural engineering team actively contributes to your project. We thoroughly assess the application environment and develop solutions in the lab, fully combining technology and application, to guarantee that innovative ideas are quickly transformed into practical solutions that reduce overall lifecycle costs.
Integrated Verification System: Using "Test Data" to Assure Innovation
The creative process doesn't stop at the drawing board. We offer one-stop verification for everything from corrosion testing to prototype development through our internal technical center. We employ empirical data to verify the performance stability of customized solutions through comprehensive simulated working condition tests. In addition to achieving genuinely dependable cost reduction and efficiency improvement, this dramatically lowers project risks.
