## Common ground
All options are types of corrugated nails categorized by their primary material.
## Options at a glance
**7317.00 – Iron or steel**
- **Defining trait:** Made primarily from iron or steel, the most common base material for durable nails.
- **Typical examples:** Standard construction nails, roofing nails.
- **Best fit when:** The nail is made of plain iron or steel without a copper head or other alloy.
**7415.10 – Copper**
- **Defining trait:** Entirely made of copper, used for corrosion resistance and aesthetic appeal.
- **Typical examples:** Decorative roofing nails, antique restoration nails.
- **Best fit when:** The entire nail is copper, not just the head.
**7415.10 – Copper head on steel**
- **Defining trait:** Steel shaft with a copper head; combines strength and corrosion resistance.
- **Typical examples:** Decorative fasteners for wood or metal where appearance matters.
- **Best fit when:** The nail has a visible copper head but steel body.
**7508.90 – Nickel**
- **Defining trait:** Made of nickel, used for high corrosion resistance and durability in harsh environments.
- **Typical examples:** Marine hardware, industrial fasteners.
- **Best fit when:** The nail is made entirely of nickel or has a significant nickel content.
**7616.10 – Aluminium**
- **Defining trait:** Lightweight and corrosion-resistant; ideal for non-ferrous applications.
- **Typical examples:** Roofing nails for aluminum siding, lightweight structures.
- **Best fit when:** The nail is visibly light in weight and made of aluminum.
**7907.00 – Zinc**
- **Defining trait:** Made of zinc, often used for galvanization or sacrificial protection.
- **Typical examples:** Galvanized nails (though typically steel with zinc coating).
- **Best fit when:** The nail is made of pure zinc or has a thick zinc layer.
## Key differences
| Option | Material | Head material | Primary use case | Weight |
|-------|----------|----------------|------------------|--------|
| 7317.00 | Iron/steel | Steel | General construction | Heavy |
| 7415.10 (copper) | Copper | Copper | Aesthetic, corrosion-resistant | Medium |
| 7415.10 (copper head) | Steel | Copper | Decorative fasteners | Medium |
| 7508.90 | Nickel | Nickel | Harsh environments | Medium-heavy |
| 7616.10 | Aluminium | Aluminium | Lightweight, non-ferrous | Light |
| 7907.00 | Zinc | Zinc | Corrosion protection | Light |
## How to choose
- Is the nail made entirely of copper? → 7415.10 (copper)
- Does it have a copper head but steel body? → 7415.10 (copper head on steel)
- Is it made of pure zinc or thick zinc coating? → 7907.00
- Is it lightweight and non-magnetic? → 7616.10
- Is it used in marine or industrial settings? → 7508.90
- Is it standard steel with no special coating or head? → 7317.00
## Overlaps & pitfalls
- **Overlap:** A copper-headed nail (7415.10) may be mistaken for a fully copper nail; clarify if the shaft is steel.
- **Pitfall:** "Zinc" nails are often galvanized steel, not pure zinc—check material composition.
- **Ambiguity:** Two entries list 7415.10; they differ only in head vs. full material—use the head detail to distinguish.
- **Priority:** Choose based on the **main body material** unless the head is a defining feature (e.g., decorative use)