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12 x 50 multifix screws plain Roofing Tek Screw Plain

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This Item can be shipped via standard or express postage, or added to your roofing order.
$17.99 Standard or $25.99 Express shipping applies if all items in your order meet this criteria.

12 x 50 Multifix Tek Roofing Screws – PLAIN (Unpainted)

Fasteners for Timber or Steel | B8™ Coating for Long-Term Protection

To order: Please select your quantity and finish (e.g. ZINCALUME®) from the dropdowns above.

Product Features

  • Plain (Unpainted) Finish: Ideal for ZINCALUME® roofing and cladding.
  • Size: 6.2mm x 50mm with B8™ coating for long-term corrosion resistance.
  • Thread Strength: 13 threads per inch. Drives into timber or steel up to 1.5mm thick.
  • Pack Sizes: Choose from 100, 500 or 1,000-piece quantities.

Delivery Options

  • 📦 Standard Delivery: $17.99
  • 🚚 Express Delivery: $25.99
  • Available Australia-wide or added to your roofing order for convenience.

Why Choose Our Tek Screws?

  • 🛡️ Built to Last: Up to 30-year warranty in mild urban conditions thanks to B8™ coating.
  • 📏 Fastener Quantity Guide: Use 6 screws per lineal metre (approx. 5 screws per 1m sheet).
  • 🧰 Optimised Installation: For best results, use with a Hex Head Socket Bit at 2000–2500 RPM.

Built for professional results — add these screws to your order today for a reliable fastening solution.

Don't forget to select the matching Hex Head Socket Bit for installation.

 

These roofing screws are fitted with a washer, ensuring the screw will fit snugly against the roofing sheet, allowing for maximum fixing and a water-tight seal.

Roof Zip 12 gauge x 50mm Class 4 Tek roofing screws for fixing into timber or steel. 


Winds can create a considerable force on both the upper surface and the underside of metal roofs. To ensure roofs are secure, our 12 x 50 Class 4 screws are recommended for fixing pierced metal sheeting to timber or metal battens.  Self-drilling hex head fasteners with neoprene sealing washers are manufactured from high tensile steel with Colorbond durable coatings.  Roofing screws should be driven through the square with the surface of the sheeting to provide a complete seal around the screw hole.   

Please do not over-tighten the Tek screws, as this can damage the sealing washer and roof sheeting. The ends of corrugated roofing and close-pitched trapezoidal roofing sheets should be fixed through the side lap and every second crest after that.


Fixings are intermediate purlins or battens, for corrugated metal roofing should be through the side lap and the third and seventh corrugation from the side lap. For close-pitch trapezoidal roofing sheets, fixings should be at every third rib.


A string line should be used to make out a straight line along the centre of the battens or purlins.

 

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