Contact Platform Support
Help CenterSelf Drilling Screw With Free Samples Factory Direct C1022A Carbon Steel White Zinc Hex Head for Metal Roofing Mill Test Report
Product Spotlights
Related Products
-
Self Drilling Screw for Industrial Construction Dacromet Coated Hex Head Stainless Steel 410 Full Sizes Available Free SamplesUS$ 900 - 1050MOQ: 1 Ton -
Self Drilling Screw Flat Head With EPDM Washer 304 Stainless Steel for Wall Cladding High Hardness Factory Direct Full SizesUS$ 900 - 1050MOQ: 1 Ton
-
Self Drilling Screw White Zinc Plated Hex Head for Industrial Construction 410 Stainless Steel Full Sizes Free SamplesUS$ 900 - 1050MOQ: 1 Ton
-
Self Drilling Screw for Steel Framing Yellow Zinc Wafer Head C1022A Carbon Steel Bulk Packing China Manufacturer Quick InstallationUS$ 900 - 1050MOQ: 1 Ton
-
Ruspert Coated Self Drilling Screw C1022A Carbon Steel Hex Head for Metal Roofing Fast Drilling No Snapping Wholesale PriceUS$ 900 - 1050MOQ: 1 Ton
Hefei SENOTECH New Materials Co., Ltd (established in 2020, with annual export value of US$1M–US$1.5M and a global market reach covering North America, South America, Europe, Asia, Africa, and Oceania) proudly presents our factory-direct Self Drilling Screw in C1022A carbon steel with white zinc plating and a hex head, specifically designed for metal roofing applications. These screws combine fast installation, reliable holding power, and long-term corrosion resistance — all backed by a Mill Test Report for material traceability. We offer free samples to let you test the quality before bulk ordering.
Our self drilling screws feature a sharp drill point that eliminates the need for pre-drilling, saving labor time and tool wear. Made from case-hardened C1022A carbon steel, they achieve a surface hardness of HV 560–620 and a core hardness of HV 320–400, ensuring the screw drills through light to medium gauge steel (up to 0.8mm) without breaking. The white zinc plating provides a corrosion-resistant layer that withstands outdoor exposure, while the hex head allows for secure driving with standard socket or impact drivers.
Key Features & Benefits:
- Self-Drilling Point: No pre-drilling required — reduces installation time by up to 50%.
- C1022A Carbon Steel: Superior strength and durability; heat-treated for optimal balance of hardness and toughness.
- White Zinc Plating: Provides 200+ hours of salt spray resistance (NSS) for long-lasting protection in humid or coastal environments.
- Hex Head Design: Compatible with standard hex sockets and drivers; minimizes cam-out and slipping.
- Full Thread: Ensures maximum grip in metal roofing panels and underlayment.
- Mill Test Report: Material certificate available upon request to verify chemical composition and mechanical properties.
- Customizable Sizes: Available from #12 to #14 diameter, lengths from 1 inch to 3 inches (or custom lengths).
- Free Samples: Test our screws on your actual roofing material before committing to a larger order.
Technical Specifications (Typical Values):
| Material | C1022A Carbon Steel (SAE 1022) |
| Hardness (Case) | HV 560 – 620 |
| Hardness (Core) | HV 320 – 400 |
| Surface Finish | White Zinc Plated (Fe/Zn 8–12μm) |
| Salt Spray Resistance | ≥ 200 hours (NSS per ASTM B117) |
| Drilling Capacity | 0.6 – 0.8 mm steel (typical) |
| Thread Type | Full thread, self-tapping |
| Head Drive | Hex socket (3/8") |
| Sizes Available | #12-14 x 1" – 3" (custom lengths on request) |
Why Choose SENOTECH as Your Fastener Supplier?
Since 2020, Hefei SENOTECH has served clients across 5 continents with annual exports exceeding US$1 million. Our factory-direct pricing eliminates middleman costs, giving you high-quality self drilling screws at competitive rates. We provide free samples for evaluation, and every order can be accompanied by a Mill Test Report to verify material compliance (C1022A carbon steel). Our screws undergo rigorous quality checks including hardness testing, salt spray testing, and dimensional inspections.
With a strong presence in North America, South America, Europe, Asia, and Africa, we understand global fastening standards and packaging requirements. Whether you need standard stock sizes or custom lengths, we can deliver within 15–30 days after order confirmation. Contact us today to request your free samples and discover how our self drilling screws can streamline your metal roofing installation while reducing costs.
Frequently Asked Questions
-
Q: Do I need to pre-drill holes before installing these screws?
A: No, the self-drilling point eliminates pre-drilling. Just drive the screw directly into metal up to 0.8 mm thick. -
Q: What kind of steel thickness can these screws penetrate?
A: They typically drill through 0.6–0.8 mm steel (e.g., 26–22 gauge metal roofing panels). For thicker materials, we recommend selecting a larger diameter or a longer drill point. -
Q: Are the white zinc screws suitable for outdoor use?
A: Yes, the white zinc coating offers good corrosion resistance for most outdoor environments. However, for highly corrosive coastal or industrial areas, we recommend our optional rust-resistant finishes (e.g., hot-dip galvanized or stainless steel) – please inquire. -
Q: Can I get a Mill Test Report for the material?
A: Absolutely. We provide a Mill Test Report upon request to confirm the chemical composition and mechanical properties of the C1022A carbon steel. -
Q: What sizes are available? Can you make custom lengths?
A: Standard sizes range from #12-14 diameter and 1" to 3" length. Custom lengths are available for volume orders – please contact us with your requirements. -
Q: How do I request free samples?
A: Simply send us an inquiry via the B2B platform or email. We will provide free samples (you pay shipping) so you can evaluate the screw quality before buying bulk. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ depends on size and finish. For standard sizes, MOQ is typically 10,000 pieces. For custom sizes, it may be higher. We also offer trial orders for sample evaluations. -
Q: How are the screws packaged for export?
A: We offer various packaging options: bulk in cartons, poly bags, or retail-ready boxes with labels. Packaging can be customized per your request.
Send Inquiry to This Supplier
You May Also Like
-
Tek Screws for Metal Roofing C1022A Carbon Steel Hex Head With EPDM Washer Dacromet High Hardness Full Sizes AvailableUS$ 900 - 1050MOQ: 1 Ton
-
1-Year Warranty Tek Screws Hex Head With EPDM Washer C1022A Carbon Steel Yellow Zinc for Industrial Construction Full Sizes AvailableUS$ 900 - 1050MOQ: 1 Ton
-
China Manufacturer Stainless Steel 410 Tek Screws Wafer Head EPDM Washer White Zinc No Snapping Full Sizes AvailableUS$ 900 - 1050MOQ: 1 Ton
-
C1022A Carbon Steel Tek Screws Hex Head With EPDM Washer Yellow Zinc for Metal Roofing No Snapping Full Sizes AvailableUS$ 900 - 1050MOQ: 1 Ton
-
China Manufacturer Roof Screws C1022A Carbon Steel White Zinc Plated 1 Year Warranty Against Snapping Bulk Packing Free SamplesUS$ 900 - 1050MOQ: 1 Ton
-
White Zinc Plated Roof Screws Wafer Head for Industrial Construction Stainless Steel 410 No Snapping Fast DrillingUS$ 900 - 1050MOQ: 1 Ton
-
Roof Screws for Metal Roofing Dacromet Coated Flat Head Self-Drilling Fast Drilling No Snapping Bulk Packing Wholesale PriceUS$ 900 - 1050MOQ: 1 Ton
-
Dacromet Coated Roof Screws Flat Head Self-Drilling Point for Steel Framing Fast Drilling Free Samples China ManufacturerUS$ 900 - 1050MOQ: 1 Ton
-
Stainless Steel 410 Roof Screws Yellow Zinc Plated Wafer Head No Snapping Bulk Packing for Metal RoofingUS$ 900 - 1050MOQ: 1 Ton
-
Flat Countersunk Square Neck DIN608/605 Zinc-Plated High-Strength Plow Bolt Carriage BoltNegotiableMOQ: 100 Boxes
