As the name suggests, plasterboard (or drywall) screws are designed for fixing plasterboard to provide a secure and long-lasting fix.

There are a variety of different types of plasterboard screws, each with its own merit. The most common types of plasterboard screws include:

  • Coarse drywall screws
  • Fine drywall screws
  • Self-drilling screws

If you’re interested in learning the specifics about each of these screws and would like to know which would be best for your job, check out our blog.

Find out more about the different types of drywall screws

What Size Plasterboard Screw Do I Need?

What size plasterboard screw you need will depend on the job, specifically what you’re fixing the plasterboard to.

If you’re fixing plasterboard to a timber frame, the screw length should be such that the screw penetrates the timber by about 25mm (1 inch). For example, for 9.5mm-thick plasterboard, use 32mm-long screws, or for 12.5mm plasterboard, use 38mm-long screws.

However, when using plasterboard screws for metal studs, you can opt for a shorter screw so long as it penetrates the metal stud by approximately 10mm.

Coarse Thread Drywall Screws

Coarse thread drywall screws are ideally used when screwing plasterboard into wood. They come with a phosphate coating that protects the screw from rust as timber is more
susceptible to damp.

Our coarse thread drywall screws are available in the following sizes:

  • 3.5mm Diameter x 32mm Length
  • 3.5mm x 38mm
  • 3.5mm x 42mm
  • 4.2mm x 75mm

They are also available as Coarse Thread Collated Drywall Screws, 25 - 75mm, Pack of 1000 in the following lengths:

  • 25mm
  • 30mm
  • 35mm
  • 45mm
  • 50mm
  • 55mm
  • 75mm

Fine Thread Drywall Screws

These hard-wearing and durable screws are most ideally used when fixing plasterboard to metal framing. Since the screw doesn’t need to penetrate as far into the metal studs, fine thread drywall screws are available with a short minimum length.

Our fine thread drywall screws are available in the following sizes:

  • 3.5mm Diameter x 25mm Length
  • 3.5mm x 32mm
  • 3.5mm x 38mm
  • 3.5mm x 42mm
  • 3.5mm x 45mm
  • 3.5mm x 50mm
  • 3.5mm x 55mm
  • 3.5mm x 60mm
  • 4.2mm x 65mm
  • 4.2mm x 75mm
  • 4.8mm x 100mm
  • 4.8mm x 125mm

They are also available as Fine Thread Collated Drywall Screws in the following lengths:

  • 25mm
  • 35mm
  • 45mm

Self Drill Drywall Screws

Unlike the previous screws mentioned, self-drilling drywall screws are specifically designed to secure plasterboard to heavier gauge track and ceiling track systems. They’re available in the following sizes:

  • 3.5mm Diameter x 25mm Length
  • 3.5mm x 32mm
  • 3.5mm x 38mm
  • 3.5mm x 42mm
  • 3.5mm x 50mm
  • 3.5mm x 55mm
  • 4.2mm x 75mm

The key thing to consider when choosing your plasterboard screws is what you’re fixing the plasterboard to. Also, note what tools you’re using for the job. If you’re planning to use an auto-feed screwdriver, make sure you choose the collated option of your chosen screw.

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