Leave Your Message

304 Stainless Steel Self-Tapping Screws - Phillips Countersunk Head, China Suppliers, Factory Direct, Class 12.9, M4.2-M6.3

Introducing our high-quality Phillips Head Countersunk Self-Drilling Self-Tapping Screws, manufactured in China by trusted suppliers at our state-of-the-art factory. Made from premium 304/316 stainless steel, these screws meet various international standards, including ISO, GB, BS, DIN, and ANSI, Available in sizes ranging from M3.5 to M6, with customizable lengths from 13mm to 100mm, these screws are perfect for a wide range of applications, including steel structure engineering, architectural decoration, hardware furniture, and outdoor facilities. Our screws feature a unique countersunk head design, self-drilling tail, and self-tapping thread, ensuring easy installation and superior performance, We offer an array of surface treatments, such as zinc plating, nickel plating, passivation, tin plating, sandblasting, anodizing, polishing, and hot-dip galvanizing (HDG), to meet your specific requirements, At our factory, we prioritize quality and efficiency, with a delivery time of 15-30 days after receiving advance payment. We accept a minimum order quantity of 10,000 pieces, which is negotiable, and samples are available for your evaluation. Choose from boxed, bulk, pallet, or customized packaging options to suit your needs, Partner with us for your fastener solutions and experience the reliability of a leading China supplier. Let's make your projects successful with our superior Phillips Head Countersunk Self-Drilling Self-Tapping Screws
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01

    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.
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws03
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws04

    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.
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws04
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws05
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws06

    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.
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws08
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws07
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws03

    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.

    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 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

    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
    Efficient Operation

    Efficient Operation, Prevents Slippage

    We use a standard Phillips recess design with precisely controlled depth and angle, compatible with mainstream power tools to enhance installation efficiency. The recess is smooth and burr-free, ensuring tight engagement with the driver bit, effectively preventing slipping or stripping. Whether for manual or automated assembly, it enables quick fastening, improves work smoothness and safety, and is especially suitable for high-frequency usage scenarios.

    Precise Structure

    Precise Structure, More Reliable Fastening

    The screw threads are fully formed with clear profiles and smooth surfaces, ensuring uniform engagement depth with nuts or base materials. The thread run-out is naturally finished to avoid jamming or seizing, improving installation smoothness. The optimized thread structure enhances tensile and torsional strength, maintaining stable fastening effect during long-term use and reducing the risk of loosening.

    Self-Drilling Tip

    All-in-One, Stronger Connections

    The self-drilling tip features a sharp point design, allowing direct drilling, tapping, and fastening on materials such as metal or wood without pre-drilling, significantly improving construction efficiency. The drilling process is stable with smooth chip removal, minimizing material damage. After fastening, it offers excellent pull-out resistance and vibration resistance, ensuring connections are not easily loosened, ideal for vibration environments or high-strength applications.

    Factory Environment

    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    Q1: What materials are your self-tapping screws made of?

    Our screws are primarily manufactured from high-grade 304 stainless steel, ensuring excellent corrosion resistance and durability for both indoor and outdoor applications.

    Q2: Do these screws require pre-drilling?

    Our self-drilling tip design allows for direct drilling and tapping into materials like wood or thin metal, significantly reducing installation time by eliminating the need for a pilot hole.

    Q3: Can I customize the screw head or slot type?

    Yes, we offer flexible customization capabilities. We can customize head shapes, slot types, surface treatment colors, and even special dimensions to meet your specific project requirements.

    Q4: How do you ensure the quality of each batch?

    We implement a strict quality control system including raw material source locking, furnace number batch traceability, and fully automatic optical sorting to ensure every screw meets international standards.

    Q5: Do you provide samples for testing before bulk orders?

    Absolutely. We offer free sample making and testing services to ensure our products meet your application needs before you commit to a full purchase.

    Q6: Are these screws compatible with automated assembly lines?

    Yes, our screws feature a high-precision Phillips recess and smooth burr-free finish, making them ideal for both manual power tools and fully automated high-speed assembly systems.