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Help CenterRoof Screws for Wall Cladding Stainless Steel 410 Hex Head With EPDM Washer Full Sizes Available Free Samples Factory Direct
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Welcome to Hefei SENOTECH New Materials Co., Ltd – your reliable partner for high-performance fastening solutions. As a dynamic trading company established in 2020, we have rapidly expanded our export network to over 20 countries, with annual export value reaching US$1 Million – US$1.5 Million. Our Roof Screws for Wall Cladding Stainless Steel 410 Hex Head with EPDM Washer are designed to deliver exceptional durability, corrosion resistance, and ease of installation for both residential and commercial metal roofing and cladding projects. By choosing us, you benefit from factory-direct pricing, full size availability, and free samples – all backed by a professional team dedicated to quality and customer satisfaction.
These screws are manufactured from Stainless Steel 410, a martensitic grade known for its high strength and moderate corrosion resistance, making them ideal for outdoor applications where moisture and temperature fluctuations are common. The hex head design allows for secure driving with standard power tools, while the bonded EPDM washer creates a watertight seal that prevents leaks and protects the fastener from rust. Whether you are installing metal roof panels, wall cladding, or insulation boards, our screws provide a reliable, long-lasting connection.
Key Features & Technical Specifications
- Material: Stainless Steel 410 – provides excellent hardness and wear resistance, suitable for moderate corrosive environments.
- Head Type: Hex head (standard 8mm / 10mm / 12mm hex available) – compatible with socket drivers for high torque transmission.
- Sealing Washer: EPDM (ethylene propylene diene monomer) rubber washer bonded to the screw – offers superior weather resistance, UV stability, and sealing performance from -40°C to +120°C.
- Drilling Capability: Self-drilling point (Type 17 or similar) – penetrates steel up to 1.5mm thickness without pre-drilling, saving installation time.
- Thread Design: Sharp thread with fine pitch – ensures strong grip in metal substrates and reduces stripping risk.
- Size Range: Full sizes available – diameters from 4.8mm to 6.3mm, lengths from 19mm to 150mm (custom lengths upon request).
- Surface Treatment: Plain (natural) finish – no additional coating, maintaining the inherent properties of 410 stainless steel.
- Packaging: Bulk in cartons, or custom labeled packaging (e.g., 100/200/500 pcs per box).
Product Advantages & Customer Benefits
| Feature | Benefit |
|---|---|
| Stainless Steel 410 material | Longer service life compared to carbon steel screws; less maintenance and replacement costs. |
| Hex head design | Allows higher torque without cam-out; compatible with impact drivers for faster installation. |
| EPDM washer bonded | Creates a permanent seal that prevents water ingress, protecting the roof structure and insulation. |
| Self-drilling tip | Eliminates need for pilot holes; reduces labor time by up to 30%. |
| Full sizes available | One-stop solution for various thicknesses of metal and cladding profiles; no need to source from multiple suppliers. |
| Free samples offered | Test the product quality before bulk order; risk-free evaluation. |
| Factory direct pricing | Competitive price without middleman markup; cost savings for large projects. |
Our Roof Screws for Wall Cladding are widely used in roofing systems, siding installations, metal building construction, and agricultural structures. Thanks to the combination of stainless steel core and EPDM sealing, these screws perform reliably in harsh weather conditions, including rain, snow, and UV exposure. The hex head also facilitates easy removal if needed, making them suitable for temporary or permanent fastening.
Why Choose Hefei SENOTECH New Materials Co., Ltd?
Since our establishment in 2020, we have built a strong reputation among international buyers. Our annual export value of US$1 million to US$1.5 million reflects the trust and satisfaction of customers across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, and South Asia. We ensure that every batch of screws undergoes strict quality control – from raw material inspection to dimensional accuracy and sealing performance testing. Our team is experienced in handling export documentation, shipping logistics, and after-sales support, so you can focus on your projects.
We are confident that our Stainless Steel 410 Hex Head Roof Screws with EPDM Washer will exceed your expectations. To get started, simply request a free sample to evaluate the quality firsthand. With full sizes available and factory-direct pricing, there is no better time to partner with us. Contact us today for a quote, technical data sheet, or to discuss your specific requirements. Let us help you build stronger, longer-lasting structures.
Frequently Asked Questions
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Q: What is the difference between 410 and 304 stainless steel for roof screws?
A: 410 stainless steel is a martensitic grade with higher hardness and strength, but lower corrosion resistance compared to 304. It is suitable for moderate environments; for highly corrosive coastal or chemical areas, we recommend 304 or 316 grades (available upon request). -
Q: Are these screws suitable for wood or only metal?
A: They are designed primarily for metal-to-metal fastening (steel up to 1.5mm). For wood or thicker steel, we offer variants with different drill points. Please contact us for specific recommendations. -
Q: How long does it take to receive a free sample?
A: We typically dispatch free samples within 1-2 business days after receiving your shipping address. Delivery time depends on the courier service (usually 3-7 working days). -
Q: Can I get custom sizes not listed in the standard range?
A: Yes, we offer customization for lengths, diameters, and head drives. Minimum order quantity may apply for non-standard sizes. Please inquire with our sales team. -
Q: Do you have any certifications for quality management?
A: While we do not claim specific certifications without documented evidence, we follow rigorous internal quality control procedures. We can provide material test reports upon request. -
Q: What is the typical packaging for bulk orders?
A: Standard packaging is in sturdy cartons (20-25 kg per carton). We can also pack in smaller boxes or polybags according to your requirements. Neutral or custom labels are available. -
Q: How do I install these screws correctly?
A: Use a hex socket driver (e.g., 8mm or 10mm) with a clutch or impact driver. Drive at perpendicular angle until the washer compresses slightly. Avoid over-tightening to prevent washer damage. For steel thickness over 1.5mm, consider pre-drilling a pilot hole. -
Q: What is the minimum order quantity (MOQ) for first order?
A: For standard sizes, the MOQ is 1,000 pcs. For custom sizes, the MOQ is typically 5,000 pcs. Sample orders are always free (shipping fee may apply).
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