Question: how many screws in a 1 lb box?
Answer: If you use 1 5/8-inch (4.1 centimeters) screws, you'll end up with around 150 screws in a pound, so figure on a 4-pound (1.8 kilograms) box of screws taking care of the room, with some left over. Actually, a 5-pound (2.3 kilograms) box of screws will usually be enough for any room, unless it's really large.