Screw Shank Nail
Nails & Construction Fasteners · spiral nail · spiral shank nail · drive screw nail
Definition: A screw shank nail has a spiral thread-like shank that twists into the wood as it is driven, holding tightly in hard and seasoned lumber.
Anatomy
■ Head■ Shank■ Point
Governing standards: ASTM F1667
Common Sizes
| Inch | Metric | Head width | Head height |
|---|---|---|---|
| 8d · 2-1/2 in | — | 9/32 | — |
| 16d · 3-1/2 in | — | 11/32 | — |
Representative sizes. Full dimensional data lives in the standards listed below.
Grades & Strength
| Grade | Material | Tensile (psi) | Marking |
|---|---|---|---|
| Bright (plain) | low carbon steel | — | Interior flooring |
| Galvanized | zinc-coated steel | — | Exterior use |
Materials
- Steel (bright)
- Galvanized steel
Pros & Cons
Pros
- Twists into dense wood
- High holding power
- Resists loosening
Cons
- Harder to remove than smooth
- Costs more
- Can split thin stock
Typical Uses
- Hardwood flooring
- Sheathing
- Siding
- Dense or seasoned lumber
Alternatives & Related
- Ring Shank Nail — Concentric rings for pull-out resistance
- Wood Screw — Removable and adjustable
Where to Buy
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FAQ
What is a screw shank nail?
A nail with a spiral shank that twists into the wood as it is driven, for hard and seasoned lumber.
Screw shank vs ring shank?
A screw shank rotates on the way in and holds dense wood; a ring shank resists straight pull-out in softer wood.