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Self-Drilling Screws
This product features a drill tip and self-tapping thread structure. The drill tip is sharp enough to drill directly through thin steel plates. Cold-forged and rolled, it produces precise threads, ensuring reliable locking and efficient installation without the need for specialized drilling tools. The full range covers mainstream systems, with readily available stock. Surface treatments include galvanizing and Dacromet coating for rust prevention. Quality control ensures compliance with environmental regulations; compliance documentation is available. Customization of non-standard lengths and drill tip types is supported.
- Executive Standard
- Specification Range
- Grade & Strength
- Common Materials
- Surface Treatment
- Surface Treatment
- Industry Classification
GB/T 15856.4; ISO 15480; DIN 7504; ANSI/ASME B18.6.4.
Metric: Thread M3~M12, length 10mm~100mm, drill tee angle 90°~120°, ST type thread; Imperial: Thread #6-32~#14-20, length 3/8"~4", drill tee angle adapted to different materials.
Carbon steel grades 4.8, 6.8, and 8.8; stainless steel grades A2-50, A2-70, A4-70, and A4-80; non-ferrous metals grade not lower than 4.8.
High-quality low-carbon steel, medium-carbon steel, alloy steel, 304 stainless steel, 316 stainless steel, brass, aluminum alloy, etc.
Environmentally friendly blue-white zinc, colored zinc, black zinc, environmentally friendly nickel plating, zinc-nickel alloy plating, Dacromet coating, electrophoresis, PVD, stainless steel natural color, stainless steel passivation, etc.
It is suitable for connecting metal sheets without pre-drilling, such as steel structures, color steel plates, thin steel plates, and door and window installations. No additional drilling is required; drilling, tapping, and locking can be completed in one step.
Do you need non-standard fasteners, precision metal parts, or custom structural components for a specific application?
Yongji helps you develop and manufacture special parts and custom products based on your drawings, samples, technical requirements, and target application scenarios.
Whether you need prototype quantities, pilot production, or stable mass supply, we provide an integrated solution from engineering review to production and delivery.
From fasteners to structural parts, Yongji offers integrated development and manufacturing for a wide range of custom precision hardware products.
Whether you need a few pieces for validation, small batches for development, or large volumes for mass production, we can support your project at different stages.
With integrated manufacturing resources in China and Vietnam, Yongji helps customers achieve stable quality, scalable production, and reliable delivery.
Yongji Precision Hardware is a global manufacturer specializing in precision fasteners and metal structural components. We are China Self-Drilling Screws Suppliers and Wholesale Self-Drilling ScrewsExporter && Company. Founded in 2003, the company has over two decades of experience serving international OEM and ODM customers across multiple industries.
With integrated manufacturing capabilities including cold heading, stamping, CNC machining and sheet metal fabrication...
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