## Common ground
All options describe wire nails made from different metals, used for fastening or joining materials.
## Options at a glance
**7317.00 – Iron/steel wire nails**
- **Defining trait:** Made primarily from iron or steel, the most common and cost-effective material for general-purpose nails.
- **Typical examples:** Common construction nails, framing nails, finish nails.
- **Best fit when:** Used in standard building, woodworking, or DIY projects where strength and affordability are key.
**7415.10 – Copper-headed steel nails**
- **Defining trait:** Steel shank with a copper head; combines steel strength with copper’s corrosion resistance and aesthetic appeal.
- **Typical examples:** Roofing nails for historic buildings, decorative fasteners.
- **Best fit when:** Applications requiring corrosion resistance or visual appeal (e.g., exterior woodwork).
**7415.10 – Copper wire nails**
- **Defining trait:** Entirely made of copper; not steel-based.
- **Typical examples:** Antique restoration, electrical grounding rods, decorative fixtures.
- **Best fit when:** Pure copper is required for conductivity, corrosion resistance, or heritage use.
**7508.90 – Nickel wire nails**
- **Defining trait:** Made of nickel, known for high corrosion and heat resistance.
- **Typical examples:** Industrial or marine applications, chemical environments.
- **Best fit when:** Extreme durability or resistance to harsh conditions is needed.
**7616.10 – Aluminium wire nails**
- **Defining trait:** Lightweight and corrosion-resistant; low strength compared to steel.
- **Typical examples:** Roofing, signage, lightweight framing.
- **Best fit when:** Weight reduction and rust resistance are priorities (e.g., outdoor signs).
**7907.00 – Zinc wire nails**
- **Defining trait:** Made of zinc; typically used for sacrificial protection or specific industrial roles.
- **Typical examples:** Galvanized fasteners, battery terminals, corrosion-resistant applications.
- **Best fit when:** Zinc’s protective coating or conductivity is essential.
## Key differences
| Option | Material | Strength | Corrosion Resistance | Weight |
|--------|----------------|----------|------------------------|----------|
| 7317.00 | Iron/Steel | High | Low (unless coated) | Medium |
| 7415.10 (copper head) | Steel + Copper | Medium-High | High (head) | Medium |
| 7415.10 (copper) | Copper | Low | Very High | Light |
| 7508.90 | Nickel | Medium | Very High | Medium |
| 7616.10 | Aluminium | Low | High | Light |
| 7907.00 | Zinc | Low | Moderate (sacrificial) | Light |
## How to choose
- Is the nail made of steel or iron? → 7317.00
- Does it have a copper head on a steel shank? → 7415.10 (copper-headed)
- Is it fully made of copper? → 7415.10 (copper wire)
- Is the material nickel? → 7508.90
- Is it aluminium? → 7616.10
- Is it zinc? → 7907.00
## Overlaps & pitfalls
- **7415.10** appears twice: once for copper-headed steel nails, once for solid copper nails. These are distinct—check material composition.
- **Zinc and aluminium nails** may be mistaken for galvanized steel; clarify if the base is pure zinc or aluminium.
- If a nail is coated (e.g., galvanized), it still falls under its base metal (e.g., steel → 7317.00).
- No priority rule given—choose based on the **primary material** of the nail