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Hammer-in Split Expansion Anchors - Zinc Plated Concrete Anchors by China Suppliers | JGD Factory

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Name: Hammer-in Split Expansion Anchor / Drive Anchor
Material: Premium carbon steel with optional 304 stainless steel
Standards: Compliant with GB, DIN, and ANSI regulations
Grade: High strength grades 4.8 and 8.8
Sizes: Available in M6, M8, M10, M12, M14, M16 (lengths from 30mm to 120mm)
Surface Treatment: Eco-friendly yellow zinc or blue-white zinc plating
Design Features: Quick-install hammer-in structure, pre-cut bifurcated expansion grooves, flanged design with anti-slip concentric circle texture, one-piece molded tapered tip, and high-quality color zinc anti-rust coating
Applications: Ideal for load-bearing wall and ceiling installations, pipe and bracket positioning, building and decoration framing, railings, and safety protection facilities
Delivery Time: 15-30 days after receipt of advance payment
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable
Samples: Available for evaluation
Packaging: Available in boxed, bulk, pallet, or custom packaging options
OEM: Custom OEM services available
Supplier Type: Reliable China supplier and manufacturer for high-quality expansion anchors.

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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

    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
    Hammer-in Quick Installation

    Hammer-in Quick Installation – One Step, No Nut Tightening

    Hammer-in design – after inserting into the pre-drilled hole, simply strike the head with a hammer. The integrally formed tapered tip drives the split expansion slots outward, anchoring tightly against the hole wall. No wrench or special tools needed – one person, one hand. Ideal for overhead work, tight spaces, or bulk installations, offering several times faster installation than traditional expansion bolts.

    Flange + Concentric Anti-Slip Rings

    Flange + Concentric Anti-Slip Rings – Load Distribution & Rotation Prevention

    The larger flange head provides greater bearing area, effectively dispersing loads and preventing hole-edge crushing or cracking. The bottom face features anti-slip concentric rings that bite into the substrate surface after driving, preventing rotation under vibration or lateral forces – ensuring stable anchoring orientation. Perfect for suspension brackets and pipe positioning.

    Quality Zinc Plating

    Quality Zinc Plating – Corrosion-Resistant & Long-Lasting

    Carbon steel substrate with eco-friendly yellow or blue-white zinc plating – dense and uniform coating resists moisture, dust, and mild corrosion. The integrally formed tapered tip has no weld seams – won't crack under impact; the split expansion slots are hardened for repeated hammering without deformation. Fatigue-tested for long-term static and dynamic loads.

    Factory Environment

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    Q1: What makes the Hammer-in installation better than traditional methods?
    The Hammer-in design allows for one-step installation without the need for nut tightening or special wrenches, making it significantly faster and reducing labor costs, especially in overhead or tight spaces.
    Q2: How do the anti-slip rings function?
    The concentric anti-slip rings on the bottom of the flange bite into the substrate surface after installation, preventing the screw from rotating under vibration or lateral forces.
    Q3: Are these screws suitable for outdoor environments?
    Yes, our screws feature quality yellow or blue-white zinc plating and are also available in 304 stainless steel, providing excellent resistance to moisture and corrosion for both indoor and outdoor use.
    Q4: Can I request customized head shapes or materials?
    Absolutely. We offer flexible customization for head/slot shapes, special materials, extra-long specifications, and even personalized packaging and labeling.
    Q5: How do you ensure the quality of your products?
    We maintain a strict quality control system including raw material source locking, full batch traceability, salt spray testing, and compliance with international standards in our joint laboratory.
    Q6: Do you provide technical support for selection?
    Yes, we offer technical services such as on-site failure analysis, selection calculations, BOM optimization, and guidance on installation tool selection.