Meridyen Drill-Point Screw YHB 3.9X32 (9,000 Pieces)

Meridyen Self-Drilling Screw YHB 3.9×32 mm — 9,000 Pieces

The Meridyen Self-Drilling Screw YHB 3.9×32 mm is a fastener engineered for applications requiring deep, permanent grip in thick multi-layer sheet metal, insulated roof‑facade systems and multi‑component metal assemblies. The YHB wide‑bearing head design distributes pressure evenly to prevent crushing the sheet and provides partial sealing protection. Supplied in a pack of 9,000 pieces, it delivers balanced stock for large construction sites and quality‑focused manufacturing workshops.

Technical Specifications

• Brand: Meridyen
• Diameter × Length: 3.9 mm outer diameter, 32 mm working length beneath the head
• Head Type: YHB — wide bearing surface, washer‑effect hexagonal flange head
• Thread Profile: Metal‑specific deep thread form; holds firmly in every layer without slipping despite the longer shank
• Point Feature: Self‑drilling tip; forms its own pilot hole, no pre‑drilling required
• Drive Type: Easily applied with standard hexagonal wrenches
• Surface Coating: Galvanized; corrosion‑resistant, suitable for indoor and outdoor use
• Pack Contents: 9,000 pieces

Applications

• Fastening three or more layers of sheet metal panels, profiles and connection components
• Roof and facade cladding: sheet + thick insulation + support profile installation
• Medium‑gauge metal frames, suspended ceilings and heavy‑duty support systems
• Securing air‑conditioning, ventilation duct and thick pipe support brackets
• Metal doors, frames, fences and railing structures
• Manufacturing of machinery housings, thick‑component white goods and large electrical panels
• Interior partition systems and heavy‑duty thick‑profile fixture connections

Product Advantages

• No Pre‑Drilling Required: Self‑drilling tip penetrates sheet metal directly; noticeably reduces installation time and labour cost
• Wide Bearing Surface: YHB head spreads load over a large area; thin metals resist crushing and tearing, the washer profile enhances sealing
• Extended Grip Depth: 32 mm working length penetrates deep into the support structure even in layered builds such as thick insulation + double‑layer sheet; ideal solution where 25 mm and shorter lengths fall short
• Right‑Sized Pack: 9,000 pieces — sufficient volume for long‑running projects or production without excess stock; simple storage and inventory management
• Reliable Hold: Metal‑optimised thread design resists loosening from vibration, wind load and temperature variation; connections remain secure for years
• Smooth High‑Speed Installation: Operates flawlessly with electric screwdrivers; the guiding tip maintains alignment so it does not drift off‑axis despite the longer length
• Long‑Lasting Protection: Galvanized coating provides durable defence against moisture, rain and outdoor conditions

Installation Recommendations

• Position the screw perfectly perpendicular to the sheet surface; angled entry accelerates tip wear and reduces holding strength
• Best suited to total assembly thicknesses of 14–22 mm; ensure adequate thread protrusion through the far side
• Do not over‑tighten; stop when the head seats fully to avoid buckling the sheet
• Place a gasket between dissimilar metals; direct contact may cause galvanic corrosion
• For thick, hard metals, pre‑drilling a pilot hole is recommended due to the longer length; reduces risk of screw breakage
• Store in dry, well‑ventilated conditions; sustained damp exposure shortens coating life

Frequently Asked Questions

What does 3.9×32 mm mean and which thicknesses is it best suited for?
3.9 mm is the outer shank diameter; 32 mm is the effective length measured from beneath the head. It is ideal for multi‑layer sheet, thick‑insulated facade and heavy‑duty metal assemblies with a total thickness of 14–22 mm.

How does the 32 mm length differ from shorter sizes?
It engages deeper into the support profile than shorter versions; passes through multiple layers in a single drive, connections remain sag‑free, load is distributed over a wider area, and loosening does not occur over time.

What advantage does the YHB head design provide?
The flared head distributes pressure evenly; prevents tearing of the sheet, partially blocks moisture and rain ingress in outdoor applications, and delivers a permanent, neat finish.