So what types of deck screws do we have available at Scrooz.
We carry 3 ranges,
one is a hardened carbon steel range which is galvanised for corrosion protection, these screws are an extremely tough and cost effective solution to deck board fastening, especially designed for use with powerdrivers these fasteners are all 10 guage in diameter and up to 65mm long.
For increased pro
tection, and also our most popular range is our extensive range of stainless steel 304 grade screws which can be used in any treated timbers, these are available in both 10 and 12 guage and are available up to 125mm long (special order). For ultimate corrosion protection and strength we also carry 316 marine grade decking screws.
For special applications we have a range of trimhead deck screws which have a fine shank and reduce head diameter for an unobtrusive yet strong fix, due to the reduced shank thickness of these fasteners, to make them very strong they are manufactured from high grade 316 stainless steel which also provides the best corrosion protection available.
All our deck screws have self drill slash points and are sold under our Razr brand, these sharp Type 17 points are designed to pre-drill the softwood structural deck timbers allowing fast driving with cordless screwguns and powerdrivers etc. They are all designed with ribbed countersinks for self embedding and all have square drive fittings to stop the heads ripping or burring when powerdriving.



Help
I am constructing a deck from 90mm Merbau 20mm thick which I need to screw to 2mm Z gal purlins.
What screws to use and how to do it. Predrill? what sizes. What is best Philips head or square head. Will there be any ionisation between the screw composition and the purlin?
Thanks Steve
HI Steve, we have a wing type self drilling screws specifically for this purpose, here’s the link http://www.scrooz.com.au/categories/screws/self-drilling-screws/drill-tech-timberfix-screws/
thanks for the enquiry