Timco Drywall Screws - Coarse Thread Bugle Head Black 3.5 x 25

You will need a PH2 (Phillips Head #2) driver bit.

These screws are designed for securing plasterboard (drywall) to timber stud work, specifically in clean, dry, and low humidity environments.

No, these screws are not recommended for outdoor use or in environments with high humidity due to their corrosion resistance limitations.

The thread length is 20mm.

This information is not provided in the product description.

The screws are 3.5 x 25mm in size.

The screws have a black phosphate finish.

Adjust the screw gun's depth setting or apply less force. Ensure the screw head is not over-driven, as this can damage the drywall.

Pre-drill pilot holes in the timber if necessary. Ensure the screw is aligned correctly and not driven in at an angle.

Ensure the screws are used in a clean, dry, and low-humidity environment as specified. If rust appears, replace the affected screws.