Coarse thread drywall screws feature sharp, wide threads that provide a strong grip in wood studs and drywall cores. Fine thread drywall screws are self-threading and work best when securing drywall to light-gauge metal studs.
The black phosphate coating provides excellent corrosion resistance and helps joint compound, paint, or plaster adhere better to the screw head compared to uncoated options.
Self-drilling drywall screws are ideal for attaching drywall directly to heavy-gauge metal frames without the need for pre-drilling pilot holes, saving time during installation.
These specialty screws are designed to join two sheets of plasterboard together directly, providing structural stability in double-boarding installations without needing to align directly with a stud.
As a general rule, the screw should penetrate at least 15mm to 20mm into the wooden stud or metal framing behind the plasterboard to ensure a secure, long-lasting hold.