Liam Carter
The d in nail sizes stands for penny, so 8d refers to an 8-penny nail, 16d to a 16-penny nail, and so on. Nails are sold by a number followed by d and by length. This measurement initially referred to the price of 100 nails, with longer nails costing more.
| Characteristics | Values |
|---|---|
| What does 'd' stand for? | Penny |
| What does '8d' mean? | 8-penny nail |
| What does '16d' mean? | 16-penny nail |
| What does '2d' mean? | 1-inch nail |
| What does '3d' mean? | 1.25-inch nail |
| What does '4d' mean? | 1.5-inch nail |
| What does '5d' mean? | 1.75-inch nail |
| What does '6d' mean? | 2-inch nail |
| What does '8d' mean? | 2.5-inch nail |
| What does '12d' mean? | 3.25-inch nail |
| What does '16d' mean? | 3.5-inch nail |
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What You'll Learn
The 'd' in nail size stands for 'penny'
The "d" in nail size stands for "penny". Nails are sold by a number followed by "d", which indicates their length. For example, 8d refers to an 8-penny nail, 16d to a 16-penny nail, and so on. This system is used to indicate nail length.
The sizing system is historical and is thought to refer to the price of nails, with longer nails costing more. For example, one 16d (3.5-inch) hand-forged nail cost 16 pennies. Retail boxes of nails are marked with the penny size as well as the length in inches.
The penny size is a standard unit of measurement for nails, abbreviated as "d". This measurement initially referred to the price of 100 nails. Now, penny size indicates nail size, although it doesn't correspond precisely to another unit of measurement.
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Nails are sold by a number followed by 'd' and by length
The penny size is a standard unit of measurement for nails, abbreviated as 'd'. This measurement initially referred to the price of 100 nails, with longer nails costing more. Now, penny size indicates nail size, although it doesn't correspond precisely to another unit of measurement. For example, a 16-penny nail is longer than an 8-penny nail.
Some people say that the number and the 'd' indicate that one 16d (3-and-a-half-inch) hand-forged nail cost 16 pennies. However, it is unclear which version is true, or why the 'd' designation persists even in building codes today.
Retail boxes of nails are marked with the penny size as well as the length in inches. Length is only one factor of many in choosing a nail.
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The 'd' system is historical
The sizing system comes from the fact that the penny size initially referred to the price of 100 nails, with longer nails costing more. For example, one source says that the number and the 'd' indicate that one 16d (3-and-a-half-inch) hand-forged nail cost 16 pennies. However, another source says that the 'd' system is historical and that it is unclear why the 'd' designation persists even in building codes today.
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A 16d nail is 3.5 inches long
The 'd' in nail sizes stands for 'penny'. So, a 16d nail is a 16-penny nail. This is a way of indicating the length of the nail. A 16d nail is 3.5 inches long.
The penny system of measurement initially referred to the price of 100 nails, with longer nails costing more. Now, the penny size indicates nail size, although it doesn't correspond precisely to another unit of measurement. For example, a 16d nail is longer than an 8d nail.
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The penny size is a standard unit of measurement for nails
The penny size initially referred to the price of 100 nails, with longer nails costing more. Now, penny size indicates nail size, although it doesn't correspond precisely to another unit of measurement. For example, a 16-penny nail is abbreviated as a 16d nail and is longer than an 8d nail.
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Frequently asked questions
The 'd' stands for 'penny'. So, 8d refers to an 8-penny nail, 16d to a 16-penny nail, and so on.
The penny system initially referred to the price of 100 nails, with longer nails costing more. Now, it indicates nail size.
A 16d nail is 3.5 inches long.
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