## Common ground
All options describe hanging apparatus—devices used to suspend or support objects—regardless of material.
## Options at a glance
**3926.90 – Made of plastic material**
- **Defining trait:** Constructed primarily from synthetic polymer materials (e.g., polyethylene, PVC).
- **Typical examples:** Plastic coat hangers, wire-free hanging hooks, shower caddies.
- **Best fit when:** The apparatus is lightweight, flexible, or designed for indoor use where corrosion resistance and low cost matter.
**8302.4X – Made of base metal**
- **Defining trait:** Constructed from non-precious metals like steel, iron, or aluminum (excluding copper).
- **Typical examples:** Metal coat hooks, industrial wall brackets, heavy-duty shelf supports.
- **Best fit when:** The apparatus must support significant weight, endure outdoor exposure, or withstand high stress.
## Key differences
| Feature | 3926.90 (Plastic) | 8302.4X (Base Metal) |
|---------------------|--------------------------|----------------------------|
| Material | Synthetic plastic | Steel, iron, aluminum |
| Weight capacity | Low to moderate | High |
| Durability | Moderate; prone to cracking | High; resistant to wear |
| Common use | Indoor, light-duty | Outdoor, industrial |
## How to choose
- Is the apparatus made of plastic or rubber? → 3926.90
- Does it contain steel, iron, or aluminum (not copper)? → 8302.4X
## Overlaps & pitfalls
A hanging apparatus could be made of both plastic and metal parts (e.g., a metal frame with plastic clips). In such cases, the **main structural material** determines the classification. If unclear, prioritize the component that bears the load or defines the product’s function. The term "base metal" excludes copper but includes iron and aluminum—ensure this distinction is considered