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Help CenterRuspert Coated Self Drilling Screw C1022A Carbon Steel Hex Head for Metal Roofing Fast Drilling No Snapping Wholesale Price
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Welcome to Hefei SENOTECH New Materials Co., Ltd, a reliable trading company established in 2020 with annual export value of US$1–1.5 million. We are proud to offer the Ruspert Coated Self Drilling Screw C1022A Carbon Steel Hex Head, designed specifically for metal roofing applications. This screw combines exceptional corrosion resistance with high-speed drilling capability and anti-snapping strength, making it a top choice for contractors and roofing professionals worldwide.
Our screws are manufactured with premium C1022A carbon steel and processed through a Ruspert coating system, which provides superior protection against rust and harsh weather. The self-drilling point eliminates the need for pre-drilling, saving time and labor costs. With the hex head design, you can use standard power tools for quick installation. And importantly, our unique heat treatment and geometry ensure no snapping even under high torque, guaranteeing a secure hold every time.
Key Features & Technical Specifications
- Ruspert Coating – Advanced anti-corrosion layer, passed 500+ hours salt spray test (lab verified).
- Self-Drilling Point (#2, #3 or #4 drill point) – Drills through up to 2mm steel sheet without pre-drilling, ideal for metal-to-metal fastening.
- C1022A Carbon Steel – High hardness (core HRC 32-38), ensures strong clamping force and resistance to stripping.
- Hex Head (1/4” or 5/16” drive) – Compatible with socket or nut driver, provides high torque transfer.
- Anti-Snapping Design – Carefully controlled case hardening depth prevents breakage during installation.
- Wide Size Availability – Diameters #8 to #14, lengths 1/2” to 3”. Custom lengths and thread types (self-tapping or self-drilling) available on request.
- Application Versatility – Suitable for metal roofing panels, steel purlins, gutters, and light structural steel.
- Bulk & Wholesale Packaging – Offered at competitive factory-direct prices. Custom labeling and packaging (poly bag, box, or carton) welcome.
Technical Data Overview
| Parameter | Value / Range |
|---|---|
| Material | C1022A Carbon Steel (SAE 1022 equivalent) |
| Surface Coating | Ruspert (zinc-aluminum-magnesium based), silver/grey |
| Hardness (Core) | HRC 32 – 38 |
| Drill Point | #2 (2.0mm), #3 (3.0mm), #4 (4.0mm) – selectable |
| Tensile Strength | ≥ 1000 N/mm² |
| Torque Resistance | ≥ 5.0 N·m (size dependent) |
| Salt Spray Test (Ruspert) | 500+ hours without red rust (independent lab) |
| Available Drive | Hex (standard), T25/T30 Torx (optional) |
Why Choose Our Ruspert Coated Self Drilling Screw?
- Fast Installation – Self-drilling tip cuts through metal like butter; no need to pre-drill or punch. Average installation time reduced by 50%.
- No Snapping Guarantee – Our proprietary heat treatment and thread design minimize stress concentration. Even when used with high-torque impact drivers, the screw withstands repeated loads without breakage.
- Cost-Effective – As a wholesale supplier, we offer factory-direct prices without compromising quality. Bulk orders receive additional discounts.
- Long-Lasting Corrosion Protection – Ruspert coating is known for its excellent barrier effect and self-healing properties. It can withstand harsh coastal and industrial environments, extending the service life of your roof.
- Global Compatibility – Hex head conforms to international standards (ANSI/ISO), and we supply both imperial and metric sizes to match your projects.
- Customizable – Need a special length, different drill point, or colored head? We provide OEM services based on MOQ (minimum order quantity).
Trust & Reliability – Backed by Hefei SENOTECH
Since 2020, Hefei SENOTECH New Materials Co., Ltd has been serving clients across 10+ global markets including North America, Europe, Southeast Asia, and Oceania. Our annual export value of US$1–1.5 million reflects the trust that international buyers place in our product quality and service. We carefully select manufacturing partners who adhere to strict quality control procedures: every batch of screws undergoes random inspection for dimensions, hardness, torque, and coating thickness. Our team handles logistics efficiently, ensuring your orders arrive on time.
Your success is our priority. Whether you are a roofing distributor, hardware store owner, or construction contractor, our Ruspert Coated Self Drilling Screws can help you reduce material costs while delivering superior performance. Contact us today for a quote or free sample. We look forward to building a long-term partnership.
Frequently Asked Questions
Q1: What does “Ruspert Coating” mean? How is it different from ordinary zinc plating?
A: Ruspert is a high-performance corrosion-resistant coating based on zinc-aluminum-magnesium flakes. It provides significantly better protection than standard zinc plating (e.g., 500+ hours salt spray vs. 100 hours for zinc), and has self-healing properties at scratches. It is also more environmentally friendly.
Q2: Can these screws be used for wood or concrete?
A: They are primarily designed for metal-to-metal fastening, such as metal roofing sheets to steel purlins. For wood or concrete, we recommend other types of screws. However, the self-drilling tip can drill through thin wood layers if needed, but not for structural wood connections.
Q3: What size should I choose for my metal roofing project?
A: Typical roof applications use #12 or #14 diameter with 1-1/2” to 2” length. For thicker steel (>1.5mm), choose #3 drill point. We provide a sizing chart upon request. Also, you can send us your material specs and we will recommend the best option.
Q4: Is the screw head hex or Phillips? Can I use a regular screwdriver?
A: The standard head is hex, which is the most common for self-drilling screws because it can handle high torque. A hex socket or nut driver is recommended. We can also supply Torx (T25/T30) drive for less cam-out. Traditional Phillips drivers are not suggested due to possible slip.
Q5: Do you provide samples before bulk order?
A: Yes, free samples (up to 10 pieces) are available for quality evaluation. You only pay for shipping. Bulk orders start from 5000 pieces per size. Contact our sales team to arrange.
Q6: How do you ensure no snapping during installation?
A: Our screws undergo case hardening with controlled depth (0.05-0.15mm) to maintain a tough core. The thread shape and relief groove are optimized to reduce stress concentration. We also test random samples under torque loads exceeding typical installation conditions.
Q7: What is the lead time for wholesale orders?
A: For standard sizes in stock, lead time is 7-15 days. For custom sizes or packaging, it typically takes 20-30 days. We can expedite for urgent orders subject to availability.
Q8: Can I get my own brand or packaging?
A: Yes, OEM/ODM is available. We can print your logo on the box or bag, and even design custom labeling. Minimum custom packaging quantity is 5000 pieces per size.
Note: All technical data are based on typical production results. Actual performance may vary depending on application conditions. Please test before large-scale use.
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