How long should drywall screws used for steel framing be?

When working with steel framing, the recommended length for drywall screws is typically 1.25 inches to 1.5 inches. The ideal choice from the options provided is 1.5 inches. This length ensures that the screw is long enough to securely penetrate both the drywall and the steel stud, providing a robust connection that minimizes the risk of the drywall loosening over time. A screw that is too short may not adequately grip the steel, leading to potential failure of the drywall installation. Conversely, using screws that are too long might result in complications, such as damaging surrounding materials or equipment. Therefore, selecting a 1.5 inch screw aligns with construction best practices for ensuring durability and stability in a drywall application on steel framing.