Meridyen Self-Drilling Screw YSB 4.8X38 (6,000 Pieces)

Meridyen Self‑Drilling Screw — Washer Head 4.8×38 mm — 6,000 Pieces

The Meridyen 4.8×38 mm Self‑Drilling Screw with Washer Head is a heavy‑duty fastener designed for fast, secure fixing of thin and thick metal sheets, profiles and structural components — no pre‑drilling required. Its wide washer head distributes pressure evenly across the surface, preventing crushing or tearing of the material. Supplied in a pack of 6,000 pieces, it offers an uninterrupted, cost‑effective solution for construction sites, high‑volume production and large‑scale assembly.

Technical Specifications

• Brand: Meridyen
• Diameter × Length: 4.8 mm diameter, 38 mm overall length
• Head Type: Washer head — wide bearing surface, integrated sealing effect
• Thread: Metal‑optimised profile; coarse pitch for maximum holding power
• Point: Self‑drilling — forms its own pilot hole; no pre‑drilling needed
• Drive: Hexagon socket; compatible with standard drivers and wrenches
• Surface Finish: Galvanised; corrosion‑resistant, suitable for indoor and outdoor use
• Pack Contents: 6,000 pieces

Applications

• Fixing roof and facade cladding sheets to supporting structures
• Installing sandwich panels, insulation boards and exterior cladding
• Connecting metal framing, suspended ceilings and load‑bearing systems
• Mounting HVAC units, ventilation ducts and pipe support brackets
• Fencing, railings, gates and outdoor metal construction
• Automotive, machinery and metal furniture manufacturing
• Roofing and facade work for warehouses, hangars and industrial buildings

Product Advantages

• No Pre‑Drilling: Self‑drilling tip penetrates metal directly; significantly reduces labour time and cost
• Wide Load‑Distributing Head: Washer head spreads force over a large area; eliminates pull‑through or dimpling in thin metal and improves sealing
• Secure, Reliable Grip: Specialised thread form bites firmly into steel; stays tight under vibration, wind and dynamic loads
• Optimal Length: 38 mm provides ample penetration through multiple sheets plus insulation; trusted performance in thicker assemblies
• Long‑Lasting Protection: Galvanised coating defends against moisture, rain and weathering; delays rust and surface degradation
• Fast‑Paced Assembly: Fully compatible with electric drivers for high‑speed installation; bulk pack reduces re‑order frequency on large projects
• Economical Bulk Supply: Higher volume reduces unit cost; supports project budgets and simplifies stock management and procurement

Installation Guidelines

• Install at a precise 90° angle to the surface; angled entry accelerates point wear and damages the thread
• Match screw length to total assembly thickness; sufficient penetration through the far side directly determines holding strength
• Do not over‑tighten; stop when the head seats fully and flush — avoid bending or distorting the sheet
• Prevent direct contact between dissimilar metals; use an isolating gasket to reduce risk of galvanic corrosion
• Store in a dry, ventilated environment; prolonged contact with moisture shortens coating life

Frequently Asked Questions

What does 4.8×38 mm mean?
4.8 mm is the outer shank diameter; 38 mm is the overall length excluding the head. This size performs best where total clamped thickness ranges from 15 mm to 25 mm — ideal for single or double sheets plus insulation layers.

Does the self‑drilling design make a difference?
Yes — it cuts its own pilot hole as it advances, so no pre‑drilling is required. This drastically speeds up installation and saves labour.

Is it suitable for outdoor use?
Yes — the galvanised finish offers good resistance to weather exposure. Regular inspection and maintenance are recommended for extended service life.