What type of screw is used to fasten gypsum wallboard to a metal stud?

The correct answer is S-screw. This type of screw is specifically designed for attaching gypsum wallboard to metal studs. S-screws, or drywall screws, typically feature a sharp tip and a fine thread, which helps them penetrate through the gypsum board and securely fasten into the metal stud. This is crucial in ensuring that the wallboard is held in place effectively, providing a solid structure for the finishing touches in construction.

In terms of application, the S-screw's design is advantageous as it minimizes the risk of stripping, which can occur when screws are not suitable for the materials being fastened. The choice of S-screws is also standard in the industry because they provide reliability and strength in these types of installations.

The other screw types listed may have different purposes. W-screws are generally used for wood applications, SW-screws might not be a standard term commonly associated with gypsum board installation, and T-screws are typically used for various fastening purposes but not specifically for drywall. Hence, S-screws stand out as the right choice for fastening gypsum wallboard to metal studs.