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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.

Shop ONLINE: PLAIN (un painted) 12 x 50 Multifix Tek Roofing Screws B8™ - fastens into timber or steel.

Use these fasteners when installing ZINCALUME® (un painted) roofing or cladding. Select from quantities: 100, 500 or 1000

How many screws do I need to install a roofing sheet?
We recommend approximately five roofing fasteners per 1 metre sheet. There are 13 threads per inch & fastens into timber or metal up to 1.5mm

Do these fasteners come with a warranty?

6.2mm x 50mm with B8 coating: Corrosion Protection Warranty Revolation B8 Class 4 - up to 30 years (Mild urban areas). Eight times the hardness of Class 4 coating.

Which drill bit do I need for these tek screws?

Select the Hex head Socket drill bit HERE.

I only require these fasteners - can I have them posted?

These roofing and cladding fasteners are available to order with postage available Australia wide. Simply select which postage option you require in the check out: Standard Postage - $17.99 or Express $25.99. Phone orders are also available. If we can help in any way, please contact our customer care team on 1300 886 944 or email

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 considerable forces 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 manufactored from high tensile steel with Colorbond durable coatings. Roofing screws should be driven through 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.

Related Products

ZINCALUME® Roofing Corrugated Iron Sheets .42 bmt

Barge Capping Roof Flashing - (10x75x140x10) ZINCALUME®

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