A 1-pound box of standard 1.25-inch-long drywall screws contains approximately 300 pieces. However, the larger the screw length or diameter, the fewer screws per pound.
Drywall screws are designed to hang drywall panels to a wood frame. If nails are used to install drywall, small bumps can form in the drywall sheets if the nails pop out. For small jobs, one can use a cordless drill to drive drywall screws, as long as the drill has variable speed control and a clutch. Professional drywall contractors often use drywall screw guns, which are power tools specifically designed to efficiently install drywall screws.