The number of 2-inch deck screws in a pound depends on three variables: screw size, type of head and the material used to make the screw, such as coated steel or stainless steel. Dividing the number of screws per box by box weight determines how many are in a pound.
For example, a 2-inch #8 screw with a Phillips head made from coated steel comes packed 2,000 screws per box, and the box weighs 17 pounds. Dividing the number of screws by the box weight gives a quotient of 117.64, which rounded up is 118. Therefore, approximately 118 2-inch coated-steel #8 Phillips head deck screws weigh one pound.