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China A2-70 304 Stainless Steel Wedge Expansion Anchor Bolts Suppliers | Mixed-Style Factory Direct

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Name: 304 Stainless Steel Mixed-Drive Wedge Expansion Anchor Bolt
Material: Made from high-quality 304 Stainless Steel, ensuring durability and resistance to corrosion.
Standards: Complies with ETAG 001 and GB/T 22795.
Grade: A2-70, offering reliable strength for various applications.
Available Sizes: M6, M8, M10, M12, M14, M16 with extended lengths ranging from 60mm to 200mm.
Surface Treatment: Features electropolishing, passivation, and a natural bright finish to enhance appearance and performance.
Design Features: This innovative anchor bolt includes a one-stop multi-drive head kit, a corrosion-resistant wedge-shaped expansion structure, and dense anti-slip knurling on top. Its extended tube body and robust construction provide versatile installation options, making it ideal for various projects.
Applications: Perfect for heavy-duty doors, windows, curtain wall projects, electromechanical fixes, exposed guardrails, safety facilities, thick substrate reinforcement, aerated concrete block support, and industrial warehousing systems.
Delivery Time: Fast delivery within 15-30 days after advance payment.
Origin: Proudly produced in China, ensuring quality and reliability.
Brand: JGD, a trusted name in the industry.
Minimum Order Quantity: 10,000 pieces, negotiable to accommodate various needs.
Samples: Available upon request for evaluation.
Packaging: Offered in boxed, bulk, or pallet form, with customization options available.
OEM: We welcome OEM orders and collaborations with partners worldwide, making us top suppliers in the manufacturing sector.

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

    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.

    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
    304 Stainless Steel Screws
    Factory Page

    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.

    Innovation Lab

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

    Collaborative R&D: From Pain Point to Implementation

    We provide more than just standard parts. Our multicultural engineering team accurately analyzes the application scenario and customizes solutions in the lab, guaranteeing that innovative ideas are quickly transformed into practical solutions that reduce overall lifetime costs.
    Fastener R&D
    Verification System

    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.

    Quick Service Reaction

    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 for both standard and custom parts.
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    Frequently Asked Questions

    What types of fasteners do you specialize in?
    We specialize in high-precision, high-strength bolts, nuts, washers, and non-standard customized fasteners following GB, DIN, ISO, ANSI, and ASME standards.
    What certifications does your factory hold?
    Our facility is certified with ISO, IATF, CE, RoHS, JIS, and ASTM, ensuring compliance with international quality and safety requirements.
    Can you provide customized solutions for specific projects?
    Yes, we offer a "Demand-Solution-Sampling-Production" closed-loop service, including one-on-one engineering support and in-house lab verification for custom designs.
    What is your typical lead time for samples and bulk orders?
    We can complete sampling and dispatch within 7 days. For bulk orders, our digital supply chain helps reduce delivery times by up to 30%.
    How do you ensure the quality of your fasteners?
    We operate an in-house laboratory with spectrometers, hardness testers, tensile machines, and salt spray testers, combined with inline optical sorting and digital MES tracking.