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Black Coated 410 Stainless Steel Self-Drilling Tek Screws - China Suppliers & Factory for Metal Sheet Applications

Introducing our high-quality Black Large Flange Phillips Self-Drilling Tek Screw, meticulously designed by trusted China suppliers in the fastener industry. Manufactured from durable 410 stainless steel and medium carbon steel, these screws meet international standards such as DIN 7504-K, ISO 15480, and GB/T 15856.2, Key features include:, - Grade 410 with high hardness (HV 400-500) and carbon steel grades ranging from 8.8 to 10.9, - Available sizes: M4.2 (#8), M4.8 (#10), M5.5 (#12), M6.3 (#14), with lengths ranging from 13mm to 150mm, - Environmentally friendly black zinc and black anodized coating for enhanced corrosion resistance and durability, Our self-drilling screws are designed with a large flange disc for optimal stress dispersion and cross-groove patterns to ensure high torque compatibility. The matte black finish not only enhances the aesthetic appeal but also prevents slipping with high-engagement threads, Ideal applications for our screws include dark-colored steel roofing, metal curtain walls, sheet metal enclosures, distribution cabinets, light steel keel and partition systems, outdoor black steel structure facilities, and automotive repair and vehicle modification, As a leading factory in China, we offer a minimum order quantity of 10,000 pieces, which is negotiable. Samples are available upon request, and we provide various packaging options, including boxed, bulk, pallet, or customized packaging solutions. OEM services are also available to meet your specific needs, Experience the reliability and quality of our Black Large Flange Phillips Self-Drilling Tek Screw, backed by our commitment to excellence as a prominent China supplier in the fastener market
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    Key Features

    Our self-tapping screws are crafted from food-grade 304 stainless steel and treated to achieve metric Grade 12.9 ultra-high strength, overcoming the traditional hardness limitations of standard stainless steel. Featuring a countersunk Phillips head design, these screws can be installed flush with the workpiece surface for a zero-profile finish, making them ideal for precision electronics and architectural decoration. We have optimized the thread geometry for different substrates (metal, wood) to ensure low-torque driving with high-torque clamping, effectively preventing stripping. As a superior alternative to standard Tek screws, these fasteners perform exceptionally well in thin sheet metal connections, providing an intelligent fastening solution that balances aesthetics with high load-bearing capacity.
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    Precision Manufacturing Process

    From wire rod to finished product, we strictly adhere to multiple international standards including ISO, DIN, ANSI, and GB. Utilizing multi-station cold forging technology, we ensure shank diameter tolerances are controlled within microns. Threads are formed through a precision thread rolling process to enhance fastening force. For non-standard requirements, we employ optical imaging sorters to reject minute defects like head cracks. In post-treatment, we offer a wide range of surface finishing options: from conventional zinc plating and nickel plating to highly corrosion-resistant Hot-Dip Galvanizing (H.D.G.), as well as decorative polishing and black anodizing. We even provide food-grade passivation treatment, ensuring every screw has a prolonged fatigue life in demanding environments.
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    Transparency & Customization

    As a source factory, we are committed to breaking down the information barriers of traditional trade. From mill certificates for raw materials to hardness grades (covering Grade 4.8 to Grade 12.9, as well as A2-70 and A4-80 marine-grade stainless steel), all test data is traceable. We support full-chain customization: dimensionally, we can adjust thread length and head thickness according to drawings; functionally, we can combine processes like sandblasting, electrophoretic coating (e-coating) , or chrome plating. Whether you need British Standard (BS) fasteners or require a special colored anodized finish, we offer small-batch sampling. This ensures that when you purchase fasteners from us, you not only receive high-quality products but also full transparency and control over the entire process, from material selection to packaging.
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    No Pre-Drilling · Rust Resistant · More Secure

    This stainless steel Phillips countersunk self-tapping screw, with its rust-resistant and corrosion-resistant material, one-step self-tapping design, and aesthetically pleasing countersunk head structure, has become the preferred solution for metal substrate fastening scenarios that is efficient, reliable, and aesthetically pleasing.
    Product Details

    Manufacturing Process
    ⚙️ 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
    🛡️ 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
    🎨 Flexible Customization
    ✔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
    🛠️ 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
    Dual-Material Options

    Dual-Material Options – 410 Stainless Steel or Carbon Steel

    Available in 410 stainless steel (HV 400-500, high hardness, high driving torque, wear-resistant tip) and medium carbon steel (Grade 8.8-10.9, cost-optimized with reliable strength). 410 grade penetrates thick steel sheets and light-gauge studs without tip wear; carbon steel with black oxide coating offers corrosion resistance and cost-effectiveness. Dual-material range covers various budgets and working conditions.

    Eco-Friendly Coating

    Eco-Friendly Black Zinc/Black Oxide Coating

    Finished with eco-friendly black zinc or black oxide coating, delivering a uniform matte black finish that effectively resists moisture, salt spray, and industrial atmospheric corrosion. Strong adhesion with no chipping or peeling; color stays stable and rust-free outdoors. Seamlessly blends with dark metal roofing and solar mounting systems.

    Large Flange Head

    Large Flange Round Head & Phillips High-Torque Drive

    The large flange round head increases bearing area, effectively preventing deformation or cracking of thin panels during tightening; bottom anti-slip teeth bite into the substrate for vibration resistance. The Phillips drive fits standard tools, delivering high torque without cam-out, while the hardened self-drilling tip completes drilling and fastening in one step.

    Factory Environment

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    ❓ Which material should I choose: 410 Stainless Steel or Carbon Steel?
    410 Stainless Steel is ideal for high-hardness applications requiring penetration of thick steel without tip wear. Carbon Steel (Grade 8.8-10.9) is a cost-effective choice for general strength requirements with excellent corrosion resistance via black oxide coating.
    ❓ Are the black coatings environmentally friendly?
    Yes, both our black zinc and black oxide coatings are eco-friendly and designed to provide industrial-grade corrosion protection while maintaining a stable, matte aesthetic finish.
    ❓ Can I request custom head shapes or sizes?
    Absolutely. Our flexible customization capability allows for custom head and slot shapes, extra-large or long specifications, and personalized packaging to meet your specific project needs.
    ❓ How do you ensure the quality of your screws?
    We implement a full traceability system using furnace batch numbers, source-locked raw materials, and real-time salt spray monitoring. All products comply with international standards and are verified in our joint laboratory.
    ❓ Do you provide technical support for installation?
    Yes, we offer comprehensive technical services including on-site failure analysis, BOM optimization, installation tool selection guidance, and free sample making for testing.