## Common ground
All options are hose clamps, used to secure hoses to fittings or tubes.
## Options at a glance
**3926.90 – Made of plastic material**
- **Defining trait:** Constructed primarily from plastic (e.g., nylon, polypropylene), offering lightweight and corrosion-resistant properties.
- **Typical examples:** Plastic worm-gear clamps, spring clamps for low-pressure applications.
- **Best fit when:** Used in environments where rust or weight matters, such as automotive cooling systems or outdoor plumbing.
**7325.99,7326.90 – Made of iron or steel**
- **Defining trait:** Fabricated from ferrous metal, providing high strength and durability, often with coatings to resist corrosion.
- **Typical examples:** Steel band clamps, threaded hose clamps for heavy-duty industrial use.
- **Best fit when:** Required in high-pressure, high-temperature, or rugged environments like engines or hydraulic systems.
**7616.9X – Made of aluminium**
- **Defining trait:** Constructed from aluminum, combining light weight with good corrosion resistance and moderate strength.
- **Typical examples:** Aluminum band clamps for marine or aerospace applications.
- **Best fit when:** Weight reduction is critical and moderate strength suffices, such as in aircraft or marine equipment.
## Key differences
| Feature | Plastic (3926.90) | Steel/Iron (7325.99,7326.90) | Aluminum (7616.9X) |
|------------------|-------------------|-------------------------------|--------------------|
| Material strength | Low to medium | High | Medium |
| Weight | Light | Heavy | Light |
| Corrosion resistance | High | Moderate (if coated) | High |
| Typical use | Low-pressure | High-stress, industrial | Lightweight systems |
## How to choose
- Is the clamp used in a high-pressure or high-temperature environment? → 7325.99,7326.90
- Does weight or corrosion resistance matter most? → 7616.9X
- Is it for low-stress, non-metallic, or temporary use? → 3926.90
## Overlaps & pitfalls
A clamp may be made of aluminum but have steel hardware (e.g., bolt), which could blur classification. The main material determines the HS Code. If unsure, prioritize the **primary structural material**. No option is vague—each clearly defines the base material