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Help CenterC1022A Carbon Steel Tek Screws Hex Head With EPDM Washer Yellow Zinc for Metal Roofing No Snapping Full Sizes Available
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Unmatched Reliability for Metal Roofing Applications
Welcome to Hefei SENOTECH New Materials Co., Ltd – your trusted partner in high-performance fasteners. Our C1022A Carbon Steel Tek Screws Hex Head with EPDM Washer Yellow Zinc are engineered to deliver secure, long-lasting connections in metal roofing and cladding projects. With over US$1 million in annual export value and a global footprint spanning North America, South America, Europe, Asia, Africa, and Oceania, we understand what it takes to meet international quality standards. These screws combine a robust carbon steel body with a yellow zinc coating for enhanced corrosion resistance and a bonded EPDM washer that provides a watertight seal – all while eliminating the risk of snapping during installation.
Whether you are a contractor, builder, or distributor, our screws are available in full size options to match your specific requirements. Designed for metal-to-metal and metal-to-wood fastening, they offer exceptional holding power and ease of use. Let’s dive into the technical details and advantages that make these screws a superior choice.
Key Features & Technical Specifications
- High-Quality Carbon Steel (C1022A): The core material ensures excellent strength and durability, suitable for demanding environments.
- Self-Drilling Tek Point: Eliminates the need for pre-drilling, saving time and labor costs. The sharp point easily penetrates steel up to ⅛ inch thick.
- Hex Head Design: Provides positive drive engagement with standard sockets or power tools, reducing cam-out and ensuring consistent torque.
- Yellow Zinc Plating: Offers moderate corrosion protection, ideal for indoor or sheltered applications. The yellow hue adds visibility for inspection.
- EPDM Washer Pre-Assembled: The bonded EPDM washer compresses to form a weather-tight seal, preventing water leakage and thermal bridging. EPDM is known for its excellent resistance to UV, ozone, and temperature extremes (-40°C to +120°C).
- Anti-Snapping Technology: Specially treated and precision-threaded to minimize breakage during high-torque installation – a common issue with inferior screws.
- Full Range of Sizes: Available from #10 to #14 diameter and lengths from ¾ inch to 6 inches (custom lengths on request).
- Compatibility: Works with metal roofing panels, steel purlins, wood substrates, and fiber cement boards.
Technical Specifications Table
| Parameter | Details |
|---|---|
| Material Grade | C1022A Carbon Steel (case hardened) |
| Hardness | Core: HRC 28-32, Case: HRC 55-60 (minimum) |
| Thread Type | Fine thread for metal; optional coarse thread for wood |
| Drilling Capacity | Up to 0.125" (3.2 mm) steel |
| Washer Outer Diameter | 16 mm (0.63") nominal |
| Salt Spray Resistance | ≥ 72 hours (yellow zinc) |
| Temperature Range (Washer) | -40°C to +120°C |
Why Choose SENOTECH C1022A Tek Screws?
- No-Snapping Confidence: Extensive quality control and premium steel reduce field failures, saving you rework costs.
- Fast Installation: The self-drilling tip and hex head allow rapid driving, increasing crew productivity by up to 30% compared to standard screws.
- Weathertight Seal: EPDM washer resists aging, cracking, and water ingress – critical for long-term roof integrity.
- Versatility: Suitable for both metal roofing and siding, as well as industrial and agricultural buildings.
- Eco-Friendly Finish: Yellow zinc plating is RoHS-compliant (upon request) and provides a decorative touch.
Trust the Numbers – Partner with SENOTECH
Since 2020, Hefei SENOTECH New Materials Co., Ltd has been serving global markets with a strong annual export value of US$1 million to US$1.5 million. Our products reach over 30 countries 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. This widespread acceptance speaks to our commitment to quality and customer satisfaction.
We maintain strict in-house quality checks on every batch, including hardness testing, salt spray testing, and dimensional inspection. Our inventory of full size options ensures you get the exact screws you need without delays. Plus, our experienced team provides responsive technical support and custom packaging services.
Ready to upgrade your roofing project? Contact us today to request a quote, ask about bulk pricing, or discuss your specific requirements. At SENOTECH, we don’t just sell screws – we deliver peace of mind.
Frequently Asked Questions
-
Q: Can these screws be used on galvanized steel without pre-drilling?
A: Yes, the self-drilling Tek point easily penetrates galvanized steel up to approximately 3.2 mm thick. No pre-drilling required. -
Q: Are the EPDM washers bonded or loose?
A: The washers are factory-assembled and bonded to the screw, ensuring they stay in place during installation. This eliminates the risk of washer loss. -
Q: What is the corrosion resistance of the yellow zinc finish?
A: Yellow zinc plating provides moderate corrosion protection, typically passing 72 hours of neutral salt spray testing. For highly corrosive environments, we recommend our stainless steel or galvanized options (available upon request). -
Q: Do you offer custom sizes or packaging?
A: Absolutely. We can produce custom lengths, diameters, and packaging labels to meet your project needs. Minimum order quantities may apply – please consult our sales team. -
Q: Can the screws be used with a regular hex driver?
A: Yes, they are designed for standard 5/16" or 8 mm hex sockets or Phillips/Robertson drives (depending on head type). We recommend using a magnetic bit holder for easier handling. -
Q: Are these screws suitable for wood-to-metal connections?
A: Yes, the fine thread works well in metal, but we also offer a coarse thread variant for wood substrates. Please specify your application when ordering. -
Q: What is the typical lead time for large orders?
A: For standard sizes, lead time is 7-15 working days after order confirmation. Custom sizes may take 15-25 days. We can expedite for urgent projects – contact us for details. -
Q: Do you provide quality certificates?
A: Yes, we can issue a material test certificate and a conformity declaration upon request. Additional testing (e.g., third-party inspection) can be arranged at cost.
Note: All technical data provided is based on standard production. For specific project requirements, please consult our engineering support team.
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