How Long Should Drywall Screws Be For 1/2-inch Drywall?

How Long Should Drywall Screws Be For 1/2-inch Drywall? When working with 1/2-inch drywall panels, use 1-1/4 or 1-3/8-inch nails or screws. When working with 5/8-inch drywall panels, use 1-3/8-inch or 1-5/8-inch screws. To properly secure drywall, the right number of drywall fasteners should be used. What length screw should you use for 1/2 drywall?