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Help CenterC1022A Carbon Steel Self Drilling Screws High Hardness Fast Drilling No Snapping Wafer Head for Metal Roofing
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Hefei SENOTECH New Materials Co., Ltd, established in 2020 with an annual export value of US$1–1.5 million, proudly presents the C1022A Carbon Steel Self Drilling Screws with High Hardness, Fast Drilling, No Snapping Wafer Head — a premium fastening solution engineered specifically for demanding metal roofing applications. Our screws combine superior material science with precision manufacturing to deliver consistent performance, reduced installation time, and long-term reliability. Whether you are a contractor, builder, or distributor, these screws offer the strength and durability your projects require.
The wafer head design provides a low profile and large bearing surface, ensuring secure fastening without damaging the roofing panel. The self-drilling tip eliminates the need for pre-drilling, saving labor and tool costs. Each screw is manufactured from high-quality C1022A carbon steel and undergoes a specialized heat treatment to achieve extreme hardness, enabling fast penetration through metal substrates up to 0.8 mm (or thicker, depending on diameter) while maintaining excellent resistance to snapping or breakage.
Below is a summary of key technical specifications for the C1022A self drilling screws:
| Parameter | Details |
|---|---|
| Material | C1022A Carbon Steel (Reinforced composition) |
| Hardness (Core) | ≥ 400 HV (after heat treatment) |
| Drilling Speed | Up to 3x faster than standard self-drilling screws |
| Head Type | Wafer Head (Low profile, large diameter bearing surface) |
| Driving System | Phillips / Pozidriv (customizable) |
| Point Type | Self-drilling drill point (No. 2, No. 3, etc.) |
| Surface Treatment | Zinc plating, Black phosphate, or other options |
| Typical Application | Metal roofing, steel framing, light gauge steel |
Core Features & Customer Benefits:
- High hardness & fast drilling — The heat-treated C1022A steel enables the drill point to cut through metal quickly with minimal effort, reducing installation time by up to 40% compared to conventional screws.
- No snapping design — Our advanced hardening process and optimized geometry prevent the screw shaft from breaking under high torque, even in thick gauges. This means less downtime and fewer wasted fasteners on the job site.
- Wafer head profile — The flat, broad head distributes clamping force evenly, preventing deformation of roofing sheets and providing a clean, professional finish.
- Excellent corrosion resistance — Available with various surface finishes (e.g., zinc plating, black phosphate) to suit different environmental exposures, ensuring long-term durability.
- Versatile compatibility — Suitable for attaching metal panels to steel purlins, wood substrates, or other metal supports, with a wide range of lengths and diameters available.
- Consistent quality — Each batch is inspected for dimensional tolerance, hardness, and drilling performance. Our screws meet stringent international standards for self-tapping fasteners.
Trusted by global customers — Hefei SENOTECH has served markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East since 2020. Our annual export volume of US$1–1.5 million reflects the reliability and demand for our fasteners. We work closely with partners to customize packaging, labeling, and sizing to meet regional requirements. Whether you need standard sizes or custom specifications, we offer flexible solutions with competitive pricing and timely delivery.
Frequently Asked Questions (FAQ):
Q1: What thickness of metal can these screws drill through?
A: The C1022A self drilling screws are designed to drill through metal roofing panels and steel substrates up to 0.8–1.2 mm thick depending on the drill point type. For thicker materials, please consult our technical team for the recommended variant.
Q2: Are these screws suitable for both steel and wood substrates?
A: Yes, the self-drilling tip works well on steel (light gauge) and wood. For wood applications, the drill point may penetrate faster, but the wafer head provides a secure grip. Always verify the substrate hardness before installation.
Q3: What surface treatment is recommended for coastal areas with high salt exposure?
A: For coastal or harsh environments, we suggest zinc plating with additional sealed coating or stainless steel variants (if available). Our standard carbon steel screws can also be supplied with black phosphate or geometric coatings for enhanced corrosion resistance. Please specify your requirements.
Q4: Can I get these screws in different lengths and diameters?
A: Absolutely. We offer a range of lengths (e.g., 1/2″ to 3″) and diameters (e.g., #8, #10, #12, #14). Custom sizes are available upon request with minimum quantity conditions.
Q5: How do you ensure the “no snapping” quality?
A: Our manufacturing process includes precise heat treatment that achieves a uniform hardness profile without brittleness. Each production batch is tested under torque to verify that the screws can withstand expected installation forces without breaking.
Q6: What packaging options do you offer?
A: We provide bulk packaging (boxes, cartons, or poly bags) as well as retail-ready blister packs or custom labeling. Packaging can be tailored to your market requirements.
Q7: Do you provide samples for testing?
A: Yes, sample orders are welcome. Please contact our sales team to discuss sample requirements and shipping costs.
Q8: What is the typical lead time for large orders?
A: For standard sizes and finishes, lead time is usually 15–25 working days after confirmation of order and payment. Custom orders may require additional time. We strive to meet tight deadlines whenever possible.
Why choose SENOTECH C1022A screws? With a proven track record in global markets (North America, Europe, Asia, and beyond), Hefei SENOTECH offers you a reliable partner for high-performance metal roofing fasteners. Our commitment to quality control, customization flexibility, and competitive pricing helps you complete projects with confidence. Contact us today to discuss your specific needs or request a quotation — your success is our priority.
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