Meridyen Self-Drilling Screw Ysb 3.9X13 (18,000 Pieces)

Meridyen Self-Drilling Screw YSB – 3.9x13 mm (Box of 18,000 Pieces)

Meridyen Self-Drilling Screw YSB, sized 3.9x13 mm, is a professional fastener that can be screwed directly into thin metal sheets and wooden surfaces without the need for pre-drilling. Thanks to its Phillips Pan Head (YSB) design, it leaves a slight protrusion on the mounting surface, provides high torque transfer, and minimizes head damage. The drill tip pierces the material and creates its own thread, significantly reducing labor time and cost. This product is sold in boxes containing 18,000 screws; ideal for wholesale purchase, factory stock, and mass production.

Technical Specifications

YSB vs YHB: Which Head Type Should I Choose?

What is a Self-Drilling Screw? What are the Advantages?

• No Pre-Drilling Required: The drill tip pierces the material and creates its own thread; no separate drill bit change or hole-drilling process is needed.
• Time & Cost Savings: By combining drilling + screwing in one step, it reduces labor time by up to 50%.
• Phillips Pan Head (YSB): Provides high torque transfer; minimizes head damage during tight installations.
• High Holding Power: Special thread structure ensures a strong grip in thin metal and wooden materials, reducing the risk of loosening.
• Wholesale Cost Advantage: The 18,000-piece box lowers the unit cost for mass production and large projects.

Application Areas

• Light Steel Construction: Thin profile joining, sheet cladding, frame assembly
• Roofing & Cladding: Trapezoidal sheet, sandwich panel, gutter installation (thin sheet)
• Furniture Production: Metal-wood joints, shelving systems, modular furniture
• Electronics & Enclosures: Computer cases, electrical panels, control box assembly
• Workshop & DIY: Custom projects, prototype production, repairs

Frequently Asked Questions

What does "YSB" mean?

YSB is the abbreviation for "Yıldız Silindir Baş" (Phillips Pan Head). The screw head has a Phillips drive profile and, thanks to its cylindrical (pan head) form, leaves a slight protrusion on the mounting surface. It offers high torque capacity.

Which bit should be used?

For 3.9 mm diameter self-drilling screws, a PH2 Phillips bit is generally recommended. Choosing the correct bit prevents damage to the screw head and optimizes torque transfer.

In which materials can 3.9x13 mm be used?

It can be used in thin metal sheets/profiles (maximum ~2 mm), wood, MDF, and chipboard. Pre-drilling is recommended for very thick metals or hard steel.

Why is the box quantity different from the YHB series?

3.9 mm screws are smaller and lighter; therefore, they are packed 18,000 pieces per box (YHB 4.8x19 mm: 12,000). Please consider this difference for logistics planning and stock management.

What is the difference between a self-drilling screw and a standard screw?

Standard screws require a pre-drilled hole; self-drilling screws create their own hole. This significantly reduces labor time and cost, especially in metal applications. It also provides fast assembly in wood applications.