Forgefix Timber Fixing Screws - Green Treated - 6.3 X 150mm - Bag 20

These screws are primarily designed for increased holding power in all types of decking timber and are also widely used in exterior timber, fencing, and landscaping applications.

It means the screws have a special coating that protects them from degradation when in contact with ACQ (Alkaline Copper Quaternary) treated timber, a common wood preservative.

It is recommended, especially in denser woods or hardwoods, to pre-drill pilot holes slightly smaller than the screw's core diameter to prevent wood splitting and ease insertion.

The exterior grade coating offers protection against corrosion for up to 1000 hours of salt spray testing.

These screws feature a Hex Flange head, which provides excellent clamping force and a clean finish.

While they can be used indoors, their design and corrosion resistance are specifically optimized for exterior and demanding timber applications.

The dimensions are 6.3 x 150mm.

Ensure the correct size driver bit is used with the hex flange head. Apply consistent downward pressure and avoid over-tightening. Pre-drilling pilot holes can also reduce the torque required.

Pre-drill a pilot hole before inserting the screw. The pilot hole should be slightly smaller than the screw's core diameter. Ensure you are not driving the screw too close to the edge of the timber.

Verify that the screw is long enough for the material thickness. Ensure the timber is sound and not rotten. For very soft woods, the coarse thread should provide ample grip; if not, consider a screw with an even coarser thread or a different fixing method.

While designed for exterior use with up to 1000 hours salt spray protection, prolonged exposure to highly aggressive environments or specific chemicals could affect the coating. Ensure screws are fully driven and consider additional sealant if concerned about extreme conditions.