Which of these nails has a smaller diameter and shank than a common nail?

• A. Box nail
• B. Finishing nail
• C. Duplex nail
• D. Shingle nail

Answer: (A)

The box nail is designed with a smaller diameter and shank compared to a common nail. This is important in applications where reduced splitting of the wood is desired, such as when nailing into softer or thinner materials. The lighter construction of the box nail allows it to create a sturdy connection without causing significant damage to the workpiece.

In contrast, the other types of nails mentioned serve different purposes and have specific design features. Finishing nails typically have a small head for hiding after installation but share similar shank sizes to common nails for strength in finishing applications. Duplex nails, known for their double-headed design, are used for temporary constructions and have a thicker shank to support multiple uses. Shingle nails, while used specifically for roofing shingles, also tend to be sturdier as they need to resist the elements, making them thicker and larger than box nails. Thus, the box nail's specific characteristics make it the best answer to the question.