High performance self drilling roofing and cladding fasteners for wood from our Razr range with a 5/16" drive hex head, includes a large diameter reversed top section underhead thread to securely grab the sheeting, toughened shanks for high power driving and a neoprene sealing washer for a watertight seal.

Provides a rapid fix self sealing fastener solution for fixing profiled roofing and cladding sheets to timber. High grade Class 4 galvanised for long life premium corrosion protection and use in external applications and treated timbers.

Features:

• Manufactured and compliant to Australian Standards AS 3566.
• Type 17 razor slash point for fast insertion and self centred start.
• Underhead reversed thread for high strength sheet clamping.
• Parallel thread providing a constant and even clamping load.
• Designed for use with powerdrivers due to heavy duty high strength shanks.
• Thread cutting profile with a coarse tapping thread for rapid installation.
• Fluted to clear drilling debris and minimise timber splitting.
• Suitable for self drilling through thin steel sheeting for roofing and cladding applications.