Vortex Battenfix 12 gauge-11 threads per inch x 40mm long screw class 3 coating
Vortex Battenfix screws are for fastening thin metal battens and ceiling battens to timber or steel.
Vortex Screws are a universal screw for fixing to timber or steel up to 1.5mm thick.
The Class 3 corrosion protection system meets the requirements of ISO 9223 Category 3 (Outdoor application for mild and moderate 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).
