What is the minimum size screw for attaching gypsum board to steel studs?

• A. #6
• B. #4
• C. #8
• D. #10

Answer: (A)

The minimum size screw for attaching gypsum board to steel studs is #6. This size is necessary to ensure adequate strength and stability when securing the gypsum board to the steel framing. Using a #6 screw provides enough length and thickness to penetrate the board and create a solid hold in the steel studs, which is essential to prevent the drywall from sagging or becoming loose over time.

Screws of this size are designed to be sturdy enough to withstand the weight of the gypsum board and any additional forces applied to it, such as during installation or subsequent use. In contrast, screws smaller than #6, like #4, may not provide sufficient grip or may shear off under pressure, leading to potential issues with the attachment.