Timco Composite Panel Hex Head Self-Drilling Screw 5.5/6.3 x 180 mm, 100 pcs

The Timco Composite Panel Hex Head Self‑Drilling Screw provides a robust, single‑step fastening solution for attaching composite panels to light‑section steel. Its hardened carbon‑steel case and core deliver high shear resistance, while the integrated fixed washer distributes load for a watertight finish.

Key Features

• Fixed washer – 12 mm diameter for wide bearing surface
• Split‑thread design – superior grip and pull‑out resistance
• Self‑drilling No.3 point – penetrates steel up to 5 mm without pre‑drilling
• Hexagon head – 8 mm socket for high‑torque application
• Silver organic finish – corrosion‑resistant, proven to 500 hours salt‑spray exposure

Specifications

_ Length: 180 mm _ Core diameter: 5.5 mm _ Outer diameter: 6.3 mm _ Material: Hardened carbon steel _ Finish: Silver organic coating _ Washer diameter: 12 mm _ Thread type: Split thread _ Self‑drilling point: No.3 type _ Maximum steel thickness: 5 mm _ Socket size: 8 mm

Applications

Ideal for roofing, cladding and general construction projects where composite panels must be securely fastened to metal substrates. Suitable for both professional tradespeople and DIY enthusiasts seeking a reliable, high‑performance fixing.