Detailed Product Overview

These professional-grade cladding fasteners are manufactured from select, high-tensile case-hardened carbon steel to ensure intense structural rigidity and exceptional mechanical torque, making them highly resistant to snapping under extreme loads. Tailored specifically for modern sandwich panel construction, industrial warehouse roofing, and commercial exterior building envelopes, the screws incorporate a sophisticated dual-threaded design. Technically, the lower fine threads tap firmly into the underlying steel framing, while the oversized upper threads securely engage the outer cladding profile sheet, stabilizing the dense insulation core between them to prevent panel dimpling or movement. To ensure absolute water tightness and evenly distributed clamping pressure across corrugated surfaces, each fastener can be paired with a heavy-duty steel or aluminum-backed EPDM sealing washer. The entire metal core is encapsulated in an elite multi-layer Dacromet coating, delivering superior salt spray protection, excellent galvanic isolation, and high heat resistance. Available in M6 and M8 specifications with lengths extending up to 300mm, these customizable Tek screws offer a streamlined, high-performance solution for joining deep profile sandwich sections to structural steel substrates.

Key Features

• Advanced Dual-Thread Clamping: Oversized top threads anchor the exterior panel while lower threads lock into structural steel, maintaining perfect core separation.

• Elite Dacromet Coating Barrier: Premium multi-layer finish provides exceptional thin-film corrosion resistance and guards against environmental weathering.

• High-Torque Hex Washer Head: Sturdy external hex flange optimizes tool socket engagement, entirely eliminating bit slippage during high-speed automated assembly.

• Precision Steel-to-Steel Drilling Point: Hardened cutting tip bites immediately into dense metal structures, ensuring fast material penetration and a tight fit.

• Deep Sandwich Section Adaptability: Extra-long structural matrix reaches up to 300mm, accommodating deep insulated composite roofing sheets easily.

Detailed Specifications Table

Business & Delivery Policies

Why Choose Us?

1. Decades of Manufacturing Excellence: With nearly 30 years (Since 1997) of expertise, we are a leading authority in high-performance hardware and precision industrial solutions.

2. Modern Large-Scale Infrastructure: Our 30,000 m² state-of-the-art facility is equipped with automated high-speed production lines to ensure precision and hygiene for every unit.

3. Integrated R&D & Design: Our dedicated team specializes in material science and ergonomic design, constantly optimizing product durability and user comfort.

4. Strategic Logistics Advantage: Located near major international shipping hubs, we provide streamlined customs handling and cost-effective delivery routes for our global clientele.