Vortex Fibre 5.0mm diameter-14 threads per inch x 20mm long screw zinc yellow coating. Countersunk Ribbed Head for 6-12mm sheeting
Vortex Fibre screws are for fastening non-compressed fibre cement boards to timber and steel up to 1.6mm thick.
Vortex Composite screws are universal screws engineered for fibre board applications.
The Zinc Yellow corrosion protection system meets the requirements of ISO 9223 Category 2 (Internal application for mild environments).
AS 3566.2 (Self drilling screws for the building & construction industries) specifies the corrosion protection systems required on screw fasteners Classes 1, 2, 3 & 4 where Class 1 is intended for indoor application and Class 4 for environments up to and including ISO 9223 Category 4 (Severe industrial and severe marine environments).
