Securfix Drywall Screws 3.5 x 45mm Black Phosphate Pack of 200

Securfix 45mm plasterboard screws, 3.5 x 45mm (6 x 1 3/4 inch), packed 200 at a time. They have a bugle head and cross drive with a black phosphate finish, and they are made for fixing plasterboard to the studs or battens behind it.

Key features

• 3.5 x 45mm, also listed as 6 x 1 3/4in
• Cross drive
• Bugle head
• Black phosphate finish
• Pack of 200

Specifications

Which one do I need?

At 45mm, these are a longer drywall screw. That extra length helps where boards are thicker, or where you need to pass through an existing layer before reaching the frame. For a single standard board on flat studs, a shorter length is usually enough.

How to use

1. Find the studs or battens and draw a line down the board for each.
2. Fit a cross bit, preferably in a depth-stop holder for consistent depth.
3. Hold the board flat to the frame and drive each screw straight.
4. Sink the head just below the plasterboard surface, ready for filling.
5. Take care not to break the paper face, which reduces the grip.

FAQs

How should 45mm plasterboard screws be finished?

Sink the heads just below the plasterboard surface so they can be filled.

What drive do they need?

They have a cross drive, so use a matching cross bit.

How many are in a pack?

Each pack has 200 screws, a sensible amount for a room or a run of patch repairs.