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High-Quality Nylon Plastic Expansion Anchors with Screws - China Suppliers & Factory for Heavy-Duty Applications

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Nylon Plastic Expansion Anchor & Screw Kit
, This high-quality expansion anchor and screw kit is produced in China by reliable suppliers, offering exceptional performance for various applications. The kit features a durable plastic tube made from PA6/PA66 or PE, paired with screws crafted from carbon steel or stainless steel (201/304). Built to meet DIN 7997 standards, our products ensure safety and reliability.

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Specifications:
, - Expansion Tube Sizes: 6mm to 14mm (lengths from 30mm to 100mm)
, - Compatible Screws: M4 to M10
, - Grade: Screws generally range from 4.8 to 8.8 grade carbon steel, with stainless steel graded A2-70.

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Surface Treatment:
, The expansion tubes come in engineering natural, yellow, or white finishes, while screws feature environmentally friendly blue-white zinc, yellow colored zinc, or a natural polished finish in stainless steel.

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Design Features:
, Our anchors are designed with fish scale and spiral anti-slip outer ribs, flexible longitudinal expansion grooves, and durable materials that are explosion-proof and crack-resistant. The flange anti-settlement edges provide enhanced stability, ensuring the kit is ready for immediate use.

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Applications:
, Ideal for light-duty home improvement projects, this kit is perfect for bathroom and kitchen hardware installation, electrical junction boxes, lightweight building materials, and furniture assembly.

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Delivery and Ordering Information:
, - Delivery Time: 15-30 days after receiving advance payment
, - Origin: China
, - Brand: JGD
, - Minimum Order Quantity: 10,000 pieces (negotiable)
, - Samples: Available
, - Packaging Options: Boxed, Bulk, Pallet, or Custom Packaging
, - OEM Services: Available

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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 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
    Multi-Grip Anti-Slip Ribs

    Multi-Grip Anti-Slip Ribs for Strong Holding Power

    The outer wall features fish-scale/spiral anti-slip ribs that embed into the hole wall from multiple directions during insertion, creating a "multi-grip" bite far superior to ordinary smooth sleeves. Whether in brick, concrete, or drywall, it delivers 360° uniform grip, effectively preventing the anchor from spinning or loosening. Combined with a flange anti-sink rim, the sleeve won't sink into the wall when tightened – ensuring a flush, secure installation, with light-load hanging as stable as a rock.

    Flexible Longitudinal Expansion Slots

    Flexible Longitudinal Expansion Slots – Crack & Burst Resistant

    The sleeve is designed with flexible longitudinal expansion slots that expand evenly outward as the screw is driven in, allowing the wall to tightly contact every part of the hole wall with uniform stress distribution – preventing localized stress concentration that could crack or burst the substrate. The nylon/PE material offers elasticity to adapt to hole tolerances, even if the drill hole is slightly oversized. Ideal for brittle substrates like hollow blocks, aerated concrete, or drywall – worry-free installation.

    Aging-Resistant Sleeve

    Aging-Resistant Sleeve & Multi-Protection Screws

    Industrial-grade nylon (PA6/PA66) or HDPE sleeve resists impact and wear, does not age or become brittle easily, with a service life of decades. Matching screws are available in carbon steel zinc-plated (blue-white/yellow zinc) or 201/304 stainless steel (A2-70), effectively resisting moisture and mild corrosion. The complete kit comes ready to use – no need to source separate screws. Long-term mounting of hardware, electrical boxes, or bathroom fittings – no rust, no failure.

    Factory Environment

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    What materials are used for the expansion sleeves?
    We use industrial-grade nylon (PA6/PA66) or high-density polyethylene (HDPE). These materials are chosen for their excellent impact resistance, wear resistance, and long-term aging resistance.
    Are your screws suitable for outdoor or corrosive environments?
    Yes, we provide matching screws in 201/304 stainless steel (A2-70) which are ideal for moisture and mild corrosion resistance. For standard indoor use, we offer carbon steel with blue-white or yellow zinc plating.
    Can these anchors be used in hollow blocks or drywall?
    Absolutely. The flexible longitudinal expansion slots are specifically designed to distribute stress uniformly, making them ideal for brittle or hollow substrates like aerated concrete, hollow blocks, and drywall.
    Do you offer customization for specific project requirements?
    Yes, we have flexible customization capabilities including customizable head and slot shapes, extra large or long specifications, special materials, and personalized packaging.
    How do you ensure the quality of each batch?
    We maintain a strict quality control system with raw material source locking, full furnace number batch traceability, and real-time monitoring of salt spray tests to ensure international standard compliance.
    What technical support do you provide for selection?
    Our technical service includes on-site failure analysis, selection calculations, BOM optimization, and installation tool guidance. We also offer free sample making and testing for our clients.