Hillman 8 x 2-1/2 In. Coarse Thread Drywall Screw, Square Drive features coarse threaded phosphate-plated steel with a Phillips drive designed for securely fastening gypsum (drywall) boards to wood studs. The screws include horizontal indentations that enhance grip and holding power, making installation faster and more efficient. Coarse thread screws are especially popular due to their higher pullout values and ease of driving, ensuring a reliable and durable fastening solution for drywall applications. Model Number: