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304 Stainless Steel Expansion Eye Bolt Heavy Duty Lifting Expansion Anchor Bol10.jpg
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304 Stainless Steel Expansion Eye Bolt - Heavy Duty Lifting Anchor, China Suppliers & Factory for Hammock and Marine Use

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Name: Expansion Bolt with Ring (Also known as Expansion Eye Bolt or Lifting Expansion Anchor with Ring)
Material: Crafted from AISI 304 Stainless Steel, known for its corrosion resistance and rust-proof properties, alongside Q235 Carbon Steel.
Standards: Compliant with GB/T 22795 and ETAG 001.
Grade: Available in Grade A2-70 (304 Stainless Steel) and Grade 4.8 / Grade 8.8 (Carbon Steel Options) including aluminum and galvanized carbon steel.
Specifications: Offered in sizes M6 to M20, customizable to meet specific needs.
Surface Treatment: Features Natural Polishing and Passivation for corrosion resistance without coating, along with Electro-galvanizing and Hot-Dip Galvanizing options for enhanced rust resistance in carbon steel.
Design Features: Includes an integrated eye structure that utilizes an expansion fixing principle, ensuring optimal corrosion resistance with a variety of specifications for easy installation.
Applications: Ideal for outdoor leisure activities, lifting and hoisting, construction engineering, shipbuilding, marine applications, and general assembly.
Delivery Time: 15-30 days after receiving advance payment.
Origin: Proudly manufactured in China.
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable to accommodate your needs.
Samples: Available upon request.
Packaging: Available in boxed, bulk, pallet, or customized packaging options.
OEM: Custom manufacturing options available to suit your specifications.

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    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01
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    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.
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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
    Feature 01

    Dual Material Options, Corrosion Resistant & Durable

    Our expansion eye bolts are available in AISI 304 stainless steel A2-70 grade and Q235 carbon steel 4.8/8.8 grade. The stainless steel version is polished and passivated with natural rust-proof performance, perfectly suitable for humid outdoor and marine salt spray environments. Carbon steel can be electro-galvanized or hot-dip galvanized for stronger anti-rust protection. Sizes range from M6 to M20 with customizable inner ring diameter.

    Integrated Eye Ring Design
    Feature 02

    Integrated Eye Ring & Expansion Anchor Design

    Adopting one-piece eye ring structure without welding breakpoints for superior tensile strength. Based on expansion anchoring principle, the sleeve expands tightly against concrete wall when tightening the nut to prevent slipping. Compliant with GB/T 22795 and ETAG 001 standards, it is ideal for concrete lifting points, hammock anchors, construction hoisting and marine mooring.

    Easy Installation
    Feature 03

    Easy Installation Without Embedding & High Efficiency

    Simple installation requires only drilling, hole cleaning, inserting the anchor and tightening the nut, with no pre-embedding needed to save construction time and labor costs. Widely applicable to construction anchoring, heavy lifting points, outdoor leisure, marine equipment and general mechanical assembly. Complete specifications and tool-free mounting support fast on-site installation.

    Application Scenarios

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    High-Quality Expansion Eye Bolt Display

    Frequently Asked Questions

    What materials are your expansion eye bolts made of?
    We offer AISI 304 stainless steel (A2-70) for superior corrosion resistance and Q235 carbon steel (Grade 4.8/8.8) with galvanized finishes for heavy-duty applications.
    What size ranges are available for customization?
    Standard sizes range from M6 to M20. We also provide flexible customization for inner ring diameters, extra-long specifications, and special head shapes.
    Are these eye bolts suitable for marine or outdoor use?
    Yes, our 304 stainless steel version is specifically polished and passivated to withstand humid outdoor conditions and marine salt spray environments.
    Do your products comply with international standards?
    Our manufacturing process and products comply with GB/T 22795 and ETAG 001 standards, ensuring high safety and load-bearing reliability.
    How do I install the expansion eye bolt?
    Installation is simple: drill a hole in the concrete, clean the dust, insert the anchor, and tighten the nut. The sleeve will expand to secure the bolt firmly.
    Can you provide samples for testing?
    Yes, we offer free sample making and testing services to ensure our products meet your specific engineering requirements before bulk orders.