Casing Nail
Nails & Construction Fasteners · casing finish nail · trim casing nail
Definition: A casing nail is a finish nail with a slightly larger, often cupped or countersunk head, sized for door and window casing and heavier interior trim.
Anatomy
■ Head■ Shank■ Point
Governing standards: ASTM F1667
Common Sizes
| Inch | Metric | Head width | Head height |
|---|---|---|---|
| 6d · 2 in | — | 7/32 | — |
| 8d · 2-1/2 in | — | 1/4 | — |
| 10d · 3 in | — | 9/32 | — |
Representative sizes. Full dimensional data lives in the standards listed below.
Grades & Strength
| Grade | Material | Tensile (psi) | Marking |
|---|---|---|---|
| Bright (plain) | low carbon steel | — | Interior trim |
| Galvanized | zinc-coated steel | — | Exterior trim |
| Stainless | stainless steel | — | Coastal trim |
Materials
- Steel (bright)
- Galvanized steel
- Stainless steel
Pros & Cons
Pros
- More holding than a finish nail
- Countersunk head sets cleanly
- Good for paint-grade trim
Cons
- Visible without filling
- Can split narrow stock
- Heavier than brads
Typical Uses
- Door and window casing
- Baseboards
- Stair trim
- Heavier moldings
Alternatives & Related
- Finish Nail — Smaller head for lighter trim
- Brad Nail — Delicate work with a nailer
Where to Buy
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FAQ
What is a casing nail?
A finish nail with a slightly larger head for door and window casing and heavier interior trim.
Casing vs finish nail?
Casing nails are a step larger in head and gauge than finish nails, with more holding power for casing and heavier trim.