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These nails are used where the nail head must be hidden. They have small heads and smaller diameters than common nails.
Casing nails have a conical head, sometimes cupped, and are somewhat thicker than a finishing nail. They are sometimes sold already painted and are used to attach trim.
| Size |
Length. inches |
Gauge |
Number per pound |
|---|---|---|---|
| 2d | 1 | 15½ | 1,010 |
| 3d | 1¼ | 14½ | 635 |
| 4d | 1½ | 14 | 473 |
| 5d | 1¾ | 14 | 406 |
| 6d | 2 | 12½ | 236 |
| 7d | 2¼ | 12½ | 210 |
| 8d | 2½ | 11½ | 145 |
| 9d | 2¾ | 11½ | 132 |
| 10d | 3 | 10½ | 94 |
| 12d | 3¼ | 10½ | 87 |
| 16d | 3½ | 10 | 71 |
| 20d | 4 | 9 | 52 |
| 30d | 4½ | 9 | 46 |
| 40d | 5 | 8 | 35 |
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Last revised: 8 November 2003.