## Common ground
All options refer to small fasteners used for securing materials, commonly known as tacks.
## Options at glance
**7317.00 – Iron or steel**
- **Defining trait:** Made primarily from iron or steel, the most common and cost-effective material.
- **Typical examples:** Common carpet tacks, roofing nails, general-purpose fasteners.
- **Best fit when:** The product is standard, durable, and used in construction or heavy-duty applications.
**7415.10 – Copper-headed iron/steel**
- **Defining trait:** Features a copper head while the shaft is iron or steel; combines strength with aesthetic or corrosion resistance.
- **Typical examples:** Decorative tacks for furniture, antique-style fasteners.
- **Best fit when:** Appearance or resistance to tarnish matters more than cost.
**7415.10 – Copper (entirely)**
- **Defining trait:** Entirely made of copper; not just the head.
- **Typical examples:** Artistic tacks, electrical connectors, vintage fixtures.
- **Best fit when:** The product is fully copper, used in decorative or conductive applications.
**7508.90 – Nickel**
- **Defining trait:** Made of nickel, known for corrosion resistance and a shiny finish.
- **Typical examples:** High-end hardware, marine or medical equipment fasteners.
- **Best fit when:** The product needs high durability in harsh environments.
**7616.10 – Aluminium**
- **Defining trait:** Lightweight and corrosion-resistant; ideal for non-ferrous applications.
- **Typical examples:** Aircraft components, outdoor signage, lightweight furniture.
- **Best fit when:** Weight or resistance to rust is critical.
**7907.00 – Zinc**
- **Defining trait:** Made of zinc, often used for galvanization or in sacrificial applications.
- **Typical examples:** Galvanized tacks, battery terminals, corrosion-prone environments.
- **Best fit when:** The product is coated or designed to resist rust through zinc’s properties.
## Key differences
| Option | Material | Head Type | Corrosion Resistance | Weight |
|-------|----------|-----------|------------------------|--------|
| 7317.00 | Iron/Steel | Standard | Low (unless coated) | High |
| 7415.10 (copper head) | Iron/Steel shaft | Copper head | Medium | High |
| 7415.10 (copper) | Copper | Full | High | Medium |
| 7508.90 | Nickel | Standard | Very high | Medium |
| 7616.10 | Aluminium | Standard | Very high | Low |
| 7907.00 | Zinc | Standard | High (sacrificial) | Medium |
## How to choose
- Is the tack made entirely of copper? → 7415.10 (copper)
- Does it have a copper head but steel shaft? → 7415.10 (copper-headed)
- Is it primarily iron or steel? → 7317.00
- Is it made of nickel? → 7508.90
- Is it lightweight and used outdoors or in aircraft? → 7616.10
- Is it zinc-coated or used for corrosion protection? → 7907.00
## Overlaps & pitfalls
- **Overlaps:** A copper-headed tack (iron/steel shaft) could be mistaken for fully copper; clarify material composition.
- **Pitfall:** "Copper" in HS Code 7415.10 refers to head only unless specified otherwise—check if the entire product is copper.
- **Priority note:** If unsure, base classification on the **main body material**, not just the head