Meridyen Drill-Point Screw YHB 3.9X13 (18,000 Pieces)

Meridyen Self-Drilling Screw YHB 3.9×13 mm — 18,000 Pieces

The Meridyen Self-Drilling Screw YHB 3.9×13 mm is a fastener designed to enable extremely quick installation in thin sheet metal, metal profiles and lightweight construction applications without the need for pre-drilling. The YHB head design provides a wide bearing surface that distributes pressure evenly without crushing the material. Supplied in a large pack of 18,000 pieces, it allows uninterrupted work in serial production, construction sites and large-scale assembly projects.

Technical Specifications

• Brand: Meridyen
• Diameter × Length: 3.9 mm outer diameter, 13 mm working length
• Head Type: YHB — wide bearing surface, washer-style sealing head
• Thread Profile: Metal-specific thread pitch; balanced for fast advance and secure grip
• Point Feature: Self-drilling tip; forms its own pilot hole, no pre-drilling required
• Drive Type: Hexagonal socket head; compatible with standard wrenches and drivers
• Surface Coating: Galvanized; corrosion-resistant, suitable for indoor and outdoor use
• Pack Contents: 18,000 pieces

Applications

• Fastening thin metal sheets and panels together
• Suspended ceiling support systems, lightweight metal frame assembly
• Installation of air conditioning, ventilation ducting and pipe support brackets
• Fixing thin sheet metal elements for roofing and facade cladding
• Metal doors, frames and lightweight fence construction
• Manufacturing of white goods, electrical panels and light machinery equipment
• Interior partition systems and fixture installations

Product Advantages

• No Pre-Drilling Needed: Self-drilling tip penetrates sheet metal directly; significantly reduces labour time and cost
• Wide Bearing Surface: YHB head spreads force over a large area; prevents crushing or tearing in thin metals and improves sealing
• Fast High-Volume Installation: Short length enables rapid driving; maximises time savings on large-quantity jobs
• Cost-Effective Bulk Pack: 18,000 pieces; reduces reorder frequency for workshops and factories with continuous production, lowers unit cost
• Secure Hold: Metal-optimised thread profile grips firmly without slipping even in thin sheet; resists loosening under vibration
• Compatible Operation: Works seamlessly with standard hex keys and automated screwdriving equipment
• Long-Lasting Protection: Galvanized coating provides durable resistance in both indoor and outdoor environments

Installation Recommendations

• Position the screw axis perfectly perpendicular to the sheet surface; angled entry increases tip wear and reduces holding strength
• Select length appropriate for total assembly thickness; this size is ideal for sheet metal thicknesses generally between 1–5 mm
• Do not over-tighten after installation; stop when the head makes full contact to prevent buckling the sheet
• Place a gasket between dissimilar metals; direct contact may create risk of galvanic corrosion
• Store in dry, well-ventilated conditions; prolonged damp environments shorten coating life

Frequently Asked Questions

What does 3.9×13 mm mean and which thicknesses is it suitable for?
3.9 mm is the outer shank diameter; 13 mm is the effective length measured from beneath the head. It is best suited for sheet metal and profile assemblies with a total material thickness of 1–5 mm.

What is the benefit of the self-drilling tip?
It drills its own pilot hole as it advances, removing the need for separate pre-drilling operations. This shortens installation time, reduces labour and boosts efficiency especially in serial production.

How much coverage does 18,000 pieces provide?
Usage varies by application intensity, but this pack provides extended stock for continuous production operations, enables uninterrupted work on large projects and reduces reorder and procurement frequency.