Common Nail vs. Box Nail
Same length, different gauge — one is for framing, the other for lighter stock.
| Feature | Common Nail | Box Nail |
|---|---|---|
| Shank | Thicker | Thinner |
| Strength | Higher | Lower |
| Splitting | Splits thin wood | Less splitting |
| Typical use | Framing, structural | Thin stock, boxes, trim |
| Same length | Yes — penny sizes match | Yes — penny sizes match |
Verdict
Frame with common nails; reach for box nails when a common nail would split thinner wood.