Carpenter nails are made in many different sizes, designs and materials. Nails come with different shanks for use on different types of wood. Carpenter nail charts show the weights of various nails according to their size.
Most of the world measures nail size in terms of millimetres. In the United States, nail size is described by using the old English term "pennies." The symbol (d) is used to denote the penny size of a nail in the United States, based on the old Roman "denarius" one-cent coin.
A nail that has a higher penny number is larger --- and will weigh more than --- one with a smaller number. Nails are typically sold by the pound. The amount of nails per lb. will vary according to their size.
Nails are made with several types of coatings. Finish nails have a corrosion-resistant coating, such as zinc. "Common" nails are uncoated.
One lb. of 16d nails contains 40 common nails or 74 finished nails. One lb. of 8d common or finished nails will contain 104 or 147 nails, respectively. One lb. of 2d nails has 794 common nails in it.
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