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Help CenterSelf Drilling Screw for Steel Framing Yellow Zinc Wafer Head C1022A Carbon Steel Bulk Packing China Manufacturer Quick Installation
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Welcome to Hefei SENOTECH New Materials Co., Ltd, a dynamic trading company established in 2020 with an annual export value of US$1 Million - US$1.5 Million, serving markets across North America, South America, Europe, Asia, Africa, and Oceania. As a reliable China-based supplier, we are proud to present our Self Drilling Screw for Steel Framing in Yellow Zinc Wafer Head design, made from high-quality C1022A Carbon Steel. This screw is engineered for quick installation, offering superior holding power and corrosion resistance for steel framing applications. Whether you are constructing metal stud walls, roof trusses, or industrial structures, our bulk-packed screws provide a cost-effective and time-saving fastening solution.
Our self drilling screws feature a wafer head with a Phillips drive, designed to sit flush against metal surfaces without snagging. The self-drilling point eliminates the need for pre-drilling, reducing labor time by up to 50% compared to traditional screws. The yellow zinc plating provides excellent corrosion resistance, making these screws suitable for both interior and exterior steel framing projects. Below is a summary of key specifications:
| Parameter | Value |
|---|---|
| Material | C1022A Carbon Steel (case hardened) |
| Finish | Yellow Zinc Plated (passivated) |
| Head Type | Wafer Head (flat countersunk) |
| Drive Type | Phillips #2 or #3 (optional) |
| Point Type | Self-Drilling (drill point, sizes #2 to #5) |
| Thread Type | Self-tapping, high-low thread for thin metal |
| Hardness | Core hardness HRC 30-38, case hardness HRC 56-62 |
| Available Sizes | #8-18 x 1/2" to #12-24 x 3", other sizes customizable |
| Packing | Bulk packing in cartons or poly bags, up to 5000 pcs per box |
Key Features & Benefits
- Rapid Installation: The self-drilling point cuts through steel up to 12 gauge (2.7mm) without pre-drilling, saving significant labor time and tool wear.
- Superior Holding Power: C1022A carbon steel is case-hardened to provide a strong core that resists stripping and shearing, ensuring a secure fastening even in high-stress steel framing.
- Corrosion Resistance: Yellow zinc plating meets ASTM B633 standards (optional) and offers moderate protection against moisture, reducing rust in humid environments.
- Flush Finish: The wafer head design allows the screw to sit flat against the metal surface, ideal for applications where panels or drywall need to be attached without protrusions.
- Versatile Application: Suitable for attaching steel studs, tracks, bridging, clips, and other components in steel framing systems, as well as for metal roof and wall panels.
- Bulk Economy: Factory-direct bulk packing minimizes packaging waste and reduces per-unit cost, making these screws ideal for large-scale construction projects.
Technical Advantages: These screws are designed with a high-low thread profile that reduces driving torque and prevents thread stripping in thin sheet metal. The self-drilling tip features a precisely ground flute that efficiently chips away metal debris, allowing for faster drilling and cleaner holes. Each screw is manufactured under strict quality control to ensure consistent dimensions, hardness, and plating thickness.
Why Choose SENOTECH? As a trading company based in Hefei, Anhui, with a strong global footprint, we offer competitive pricing without compromising on quality. Our annual export volume of US$1M - US$1.5M demonstrates our reliability and commitment to international partners. We work closely with experienced local manufacturers to deliver products that meet your specific requirements—whether it's a special size, custom packaging, or a specific plating thickness. All our shipments are inspected before dispatch to ensure compliance with your specifications.
By choosing our Self Drilling Screw for Steel Framing, you gain a partner dedicated to fast delivery, consistent quality, and responsive customer service. We invite you to contact us today to request a sample, discuss bulk pricing, or ask any technical questions. Let SENOTECH be your trusted source for cost-effective steel framing fasteners.
Frequently Asked Questions (FAQ)
- Q: What thickness of steel can these screws drill through without pre-drilling? A: Our self drilling screws can penetrate steel from 22 gauge (0.76mm) up to 12 gauge (2.7mm) depending on the drill point size. For heavier gauge steel, we recommend using a larger drill point (e.g., #4 or #5).
- Q: Are these screws suitable for outdoor use? A: The yellow zinc plating provides moderate corrosion resistance, making them suitable for interior applications and sheltered exterior use. For continuous outdoor exposure, consider a higher corrosion-resistant coating like stainless steel or hot-dip galvanized (available upon request).
- Q: What is the typical quantity in a bulk pack? A: Bulk packing varies by screw size. For example, #8 screws are typically supplied in boxes of 5,000 pieces, while #12 screws come in boxes of 2,500 pieces. Custom packaging quantities are available.
- Q: Can I get these screws with a different drive type (e.g., square or hex)? A: Yes, we can customize the drive type to Phillips, square, hex, or Torx depending on your preference. Please consult with our sales team for minimum order quantities.
- Q: What is the hardness of the screw core? A: The core hardness is HRC 30-38, and the case hardness is HRC 56-62, providing excellent balance between toughness and wear resistance.
- Q: Do these screws meet any international standards? A: Our screws are manufactured to meet general industry standards for self-drilling screws (e.g., SAE J78, ASTM C1513). Specific certifications can be provided upon request if your project requires them.
- Q: How do I choose the right length for my steel framing application? A: The screw length should exceed the thickness of the material being fastened plus at least 3/8" (10mm) of thread engagement into the underlying steel. For example, for attaching 1/2" drywall to 20-gauge steel, a 1" screw is typically sufficient.
- Q: What is the lead time for bulk orders? A: For standard sizes and quantities, lead time is typically 7-15 working days. Custom sizes or coatings may require 20-25 working days. We offer urgent production for large orders with a premium.
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