Meridyen Self-Drilling Screw Ysb 3.9X16 (18,000 Pieces)

Meridyen Self-Drilling Screw YSB – 3.9x16 mm (Box of 18,000 Pieces)

The Meridyen Self-Drilling Screw YSB, measuring 3.9x16 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 provides high torque transfer and minimizes head damage during installation. The 16 mm length offers a secure grip in thicker materials or multi-layered thin sheet joints compared to the 13 mm model. The drill tip bores through the material and creates its own thread, significantly reducing labor time and cost. This product is sold by the box containing 18,000 screws; ideal for wholesale purchase, factory stock, and mass production.

Technical Specifications

3.9x13 mm vs 3.9x16 mm: Which One Should I Choose?

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

• No Pre-Drilling Required: The drill tip bores through the material and creates its own thread; no separate drill bit change or hole-drilling process is needed.
• Time & Cost Savings: By combining drilling and screwing into a single step, it reduces labor time by up to 50%.
• Phillips Pan Head (YSB): Provides high torque transfer and minimizes head damage during tight installations.
• High Holding Power: The 16 mm length ensures deeper thread penetration, reducing the risk of loosening.
• Wholesale Cost Advantage: The 18,000-piece box lowers the unit cost for mass production and large-scale projects.

Application Areas

• Light Steel Construction: Medium thickness profile joining, sheet cladding, frame assembly
• Roofing & Cladding: Multi-layered trapezoidal sheets, sandwich panels, gutter installation
• 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?

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

In which materials does the 16 mm length provide an advantage?

The 16 mm length provides 3 mm more penetration than the 13 mm version. This means a stronger grip in medium-thickness metal sheets/profiles (2.5–3 mm) and multi-layered thin sheet joints. For very thin sheets, 13 mm may be sufficient.

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 ensures fast assembly in wood applications.