Product Details
Product Description
Our yellow self drilling screws are made in advanced China factories with high-quality carbon steel and a durable zinc plated finish for corrosion resistance. The hex washer head design ensures a secure grip and stable installation in metal or wood surfaces. Sizes range from #8×1/2″ to #14×2″ (4.2×13mm to 6.3×50mm), suitable for roofing, construction, and industrial assembly. The sharp drilling point eliminates the need for pre-drilling, saving time and labor. As a reliable China manufacturer of yellow self drilling screws, we supply B2B buyers with consistent quality, OEM options, and fast delivery. Choose our zinc plated self drilling screws from China factories for your next project — durable, precise, and built to last.
Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Standard | DIN 7504, ANSI B18.6.4 | Thread Type | Self-Tapping |
| Head Type | Hex Washer Head | Point Type | Self-Drilling Point (Type BSD) |
| Drive Type | 1/4″ Hex Drive | Coating/Finish | Yellow Zinc Plated |
| Material | Medium Carbon Steel | Hardness | 45-52 HRC |
| Corrosion Resistance | 200+ hours salt spray test | Tensile Strength | 1000 MPa |
| Point Size | #2, #3, #4 Available | Production Capacity | 500 tons/month |
Product Size (Top Sellers for Target Regions)
Popular sizes for Middle East, Central Asia and Southeast Asia markets:
| Diameter (mm) | Diameter (Inch) | Length (mm) | Length (Inch) | Point Size |
|---|---|---|---|---|
| 4.2 mm | #8 | 19 mm | 3/4″ | #2 |
| 4.8 mm | #10 | 25 mm | 1″ | #2 |
| 5.5 mm | #12 | 32 mm | 1-1/4″ | #3 |
| 5.5 mm | #12 | 38 mm | 1-1/2″ | #3 |
| 6.3 mm | 1/4″ | 38 mm | 1-1/2″ | #4 |
Note: Custom sizes and packaging available for bulk orders
Application Scenarios
Yellow self drilling screws are widely used in various metal and construction projects where durability and corrosion resistance are required. These zinc plated screws from China factories offer reliable fastening performance in the following applications:
- Roofing and Sheet Metal Installation – Secure metal sheets and panels to steel or wooden structures.
- Steel Frame Construction – Ideal for connecting metal profiles and light steel frames.
- HVAC and Ventilation Systems – Fasten ducts, brackets, and support structures with strong holding power.
- Electrical and Machinery Assembly – Used for equipment housing, control boxes, and machine enclosures.
- OEM and Industrial Manufacturing – Preferred by factories needing consistent quality and bulk supply.
Durable and easy to install, our yellow zinc plated self drilling screws are trusted by global B2B buyers for long-term performance.
Frequently Asked Questions (B2B-oriented)
A: The yellow zinc plated self drilling screws have an additional chromate layer over the zinc coating, providing higher corrosion resistance and better visual identification during assembly. This makes them more suitable for outdoor or humid construction environments than standard silver zinc screws.
A: The hex washer head design increases contact area and torque transfer, ensuring stable fastening in metal-to-metal applications. It also helps distribute pressure evenly, reducing surface damage — an important feature for roofing and light steel frame systems.
A: Our zinc plated self drilling screws can drill through steel plates up to 3.0–4.8mm thick depending on diameter and point design. All screws are precision-formed and heat-treated in our China factories to maintain consistent hardness and self-drilling capability.
A: Yes. When combined with proper torque settings and washers, yellow zinc plated hex washer head screws offer excellent resistance to loosening under vibration. They are commonly used in HVAC units, machine enclosures, and structural assemblies requiring stability.
A: Absolutely. As a China manufacturer of yellow self drilling screws, we offer OEM production with customized head markings, surface coatings, and packaging. This flexibility supports distributors and construction hardware brands seeking private-label solutions.