1-Year Warranty Tek Screws Hex Head With EPDM Washer C1022A Carbon Steel Yellow Zinc for Industrial Construction Full Sizes Available
Product Spotlights
Welcome to Hefei SENOTECH New Materials Co., Ltd — your reliable partner for industrial fastening solutions. Our 1-Year Warranty Tek Screws Hex Head with EPDM Washer C1022A Carbon Steel Yellow Zinc are engineered for demanding construction environments. Since 2020, we have been supplying global markets with high-performance screws that combine durability, corrosion resistance, and ease of installation. With an annual export value of US$1–1.5 million, we serve diverse regions including North America, South America, Europe, and Asia. These screws are designed to deliver secure, long-lasting connections in metal-to-metal and metal-to-wood applications, making them an essential choice for industrial construction projects.
Product Features & Technical Specifications
- Self-Drilling Capability: The integrated drill point eliminates the need for pre-drilling, saving time and labor. Suitable for steel up to 12 gauge (0.105 inch) thickness.
- Hex Head Design: Provides excellent torque transfer and reduces cam-out during installation. Compatible with standard hex socket drivers (e.g., 1/4" or 5/16") for power tools.
- EPDM Rubber Washer: Pre-assembled, high-quality EPDM washer creates a watertight seal, preventing leaks and corrosion. Resistant to UV, ozone, and extreme temperatures (-40°F to 250°F).
- Carbon Steel C1022A: Hardened carbon steel offers superior strength and ductility. Treated for consistent hardness across the screw body.
- Yellow Zinc Plating: Provides excellent corrosion resistance (up to 72 hours salt spray test, optional) and a distinctive finish for easy identification.
- Full Size Availability: We stock a complete range of diameters (e.g., #10, #12, #14) and lengths (from 1" to 6") to match various application requirements.
- 1-Year Warranty: Backed by our quality assurance, covering manufacturing defects. Contact our team for warranty terms.
Common Size Reference Table
| Diameter (Inch) | Length Range | Drilling Capacity | Thread Pitch | Washer Diameter |
|---|---|---|---|---|
| #10 (0.190") | 1" – 3" | Up to 0.090" steel | 16 TPI | 0.560" |
| #12 (0.216") | 1" – 4" | Up to 0.105" steel | 14 TPI | 0.625" |
| #14 (0.242") | 1.5" – 6" | Up to 0.125" steel | 13 TPI | 0.750" |
Key Advantages for Your Projects
- Reduced Installation Time: Self-drilling points and hex head drive allow fast, one-step fastening without pilot holes.
- Weatherproof Sealing: EPDM washer expands slightly under compression, filling gaps around the fastener head — ideal for roofing, siding, and exterior panels.
- Long Service Life: Yellow zinc finish protects against rust in humid or coastal environments. Carbon steel core maintains clamping force even under vibration.
- Versatility: Suitable for attaching metal roofing panels, steel framing, gutters, HVAC ducts, and wood-to-metal connections.
- Consistent Quality: Manufactured under strict process control with regular hardness and dimensional testing. Each batch traceable.
Trust Hefei SENOTECH for Your Industrial Fasteners
With annual exports exceeding US$1 million and a presence in over 12 global market regions, Hefei SENOTECH New Materials Co., Ltd has earned the confidence of contractors and distributors worldwide. Our dedicated team ensures timely delivery, competitive pricing, and responsive after-sales support. Hundreds of repeat customers rely on our Tek Screws for their routine and large-scale industrial construction needs. We stand behind every fastener with a 1-year warranty — a testament to our commitment to reliability. Contact us today for a quotation or technical consultation, and experience the difference of a trusted partner.
Frequently Asked Questions
-
Q: What thickness of steel can these screws drill through?
A: Depending on the size, our #10 screws drill up to 0.090", #12 up to 0.105", and #14 up to 0.125" steel. For thicker materials, consider using a pilot hole or selecting larger diameter screws. -
Q: Are the EPDM washers pre-attached or do I need to install them separately?
A: The EPDM washers are pre-assembled onto the screws and are ready to use. They remain securely in place during installation. -
Q: Can these screws be used in direct contact with pressure-treated wood?
A: Yes, the yellow zinc coating provides adequate corrosion resistance for most treated lumber applications. However, for extremely corrosive environments (e.g., constant water immersion), we recommend our stainless steel options (available upon request). -
Q: What is the temperature range for the EPDM washer?
A: EPDM is effective from -40°F to 250°F (-40°C to 121°C). It remains flexible and resistant to cracking in cold weather. -
Q: Do you offer custom sizes or packaging?
A: Yes, we can provide custom lengths, special drive types (e.g., Phillips or Torx), and private labeling. Minimum order quantities may apply — please inquire with our sales team. -
Q: How is the 1-year warranty enforced?
A: The warranty covers manufacturing defects such as inconsistent hardness, brittle fracture, or improper coating. If you encounter such issues, contact us with order details and photos; we will replace the defective screws at no charge. -
Q: What is the typical lead time for standard sizes?
A: For common sizes (#10, #12, #14 in popular lengths), we maintain stock and can ship within 7–15 working days. Bulk orders or non-standard sizes may require 20–30 days. -
Q: Do these screws comply with any international standards?
A: These screws are manufactured according to common industry standards for self drilling screws (e.g., SAE J78 or similar). For specific certification requirements, please discuss with our team — we can arrange third-party testing if needed.
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