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A2-70 304 Stainless Steel Wedge Expansion Anchor Bolts - China Suppliers & Factory Direct

Name: 304 Stainless Steel Mixed-Drive Wedge Expansion Anchor Bolt, Material: Premium 304 Stainless Steel, Standards: ETAG 001, GB/T 22795, Grade: A2-70, Sizes: Available in M6, M8, M10, M12, M14, M16 (Extended lengths from 60mm to 200mm), Surface Treatment: Features include Electropolishing, Passivation, and a Natural Bright Finish, Design Features: Our innovative design includes a one-stop multi-drive head kit, corrosion-resistant wedge-shaped metal expansion structure, dense anti-slip knurling on the top, extended tube body, and a robust construction, ensuring versatile installation options for various applications, Applications: Ideal for heavy-duty doors, windows, and curtain wall projects, heavy-duty electromechanical and bracket fixing, exposed guardrails and safety facilities, as well as thick substrate and aerated concrete block reinforcement. Suitable for industrial warehousing and racking systems, Delivery Time: 15-30 days after receiving advance payment, Origin: Manufactured in China, Brand: JGD, Minimum Order Quantity: 10,000 pieces (negotiable), Samples: Available upon request, Packaging: Options include Boxed, Bulk, Pallet, or customized packaging, OEM: Available, As a leading factory and supplier in China, we are committed to providing high-quality fastening solutions tailored to meet your construction needs
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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

    Precision Fastening, Engineered for the Future – Sichuan Jingguda Fasteners Co., Ltd., Your Trusted High-Quality Fastener Expert

    Sichuan Jingguda Fasteners Co., Ltd. is a professional fastener manufacturer integrating R&D, production, and sales. We specialize in high-precision, high-strength bolts, nuts, washers, and non-standard customized fasteners, covering international standards such as GB, DIN, ISO, ANSI, and ASME. Equipped with multi-station cold heading machines, high-speed thread rolling machines, fully automated heat treatment lines, and surface treatment equipment, we also operate an in-house laboratory featuring spectrometers, hardness testers, tensile testing machines, and salt spray testers to ensure strict quality control from raw materials to finished products.
    Our products are widely used in industrial machinery, renewable energy, automotive manufacturing, rail transportation, and more, known for their precision, corrosion resistance, and durability. Committed to “Fast Delivery, Professional Support,” we provide one-on-one customized solutions and efficient logistics, striving to be your ideal partner for reliable connections.

    🚀 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
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    🏗️ From Raw Materials to Completed Items

    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 manufacturing from raw material to finished product. Thanks to inline optical sorting and a digital MES, every fastener meets stringent standards for strength, accuracy, and surface quality.
    Factory Page

    💡 Innovation Lab

    Expertise and collaboration drive us forward, constantly pursuing innovative solutions. Have a project? Let's get started.

    Collaborative R&D

    We provide more than just standard parts. From the beginning, our multicultural engineering team actively contributes to your project. We accurately analyze the application scenario and customize solutions in the lab, seamlessly integrating technology and application.
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    Integrated Verification System

    Using our in-house technical center, we provide one-stop verification from corrosion testing to prototype development. Through thorough simulated working condition tests, we use empirical data to confirm performance stability, significantly reducing project risks.
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    ⚡ Quick Service Reaction

    After confirmation, intelligently schedule production utilizing digital quality control and agile supply chains to cut the delivery time of bulk orders by 30%. Complete sampling and dispatch within 7 days. Our "Demand-Solution-Sampling-Production" closed-loop solution ensures you benefit from market opportunities.
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    Frequently Asked Questions

    What international standards do your fasteners comply with?
    Our products cover a wide range of international standards, including GB, DIN, ISO, ANSI, and ASME, ensuring compatibility for global industrial applications.
    What is your annual production capacity?
    Equipped with over 70 advanced production lines, we have an annual output capacity of up to 50,000,000 tons of high-quality fasteners.
    How do you ensure the quality of your fasteners?
    We operate an in-house laboratory with over 30 sets of precision equipment, including spectrometers, hardness testers, tensile testing machines, and salt spray testers for rigorous quality control.
    Do you offer customized or non-standard fastener solutions?
    Yes, we specialize in non-standard customized fasteners. Our engineering team provides "Demand-Solution-Sampling-Production" services to meet specific project requirements.
    What is your typical lead time for samples and bulk orders?
    We can complete sampling and dispatch within 7 days. Our digital supply chain and automated production allow us to reduce bulk order delivery times by approximately 30%.
    Which industries are your products primarily used in?
    Our fasteners are widely utilized in industrial machinery, renewable energy (solar/wind), automotive manufacturing, and rail transportation sectors.