Construction Nail Sizes
Common, box, and finishing nails have their own size code.Nail lengths are also measured in pennies (marked by the small letter "d").
Here is a simple nail size conversion table:
| penny size | length (inches) | length (nearest mm) |
|---|---|---|
| 2d | 1 | 25 |
| 3d | 1� | 32 |
| 4d | 1� | 38 |
| 5d | 1� | 44 |
| 6d | 2 | 51 |
| 7d | 2� | 57 |
| 8d | 2� | 65 |
| 9d | 2� | 70 |
| 10d | 3 | 76 |
| 12d | 3� | 83 |
| 16d | 3� | 89 |
| 20d | 4 | 102 |
| 30d | 4� | 115 |
| 40d | 5 | 127 |
| 50d | 5� | 140 |
| 60d | 6 | 152 |
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