## Common ground
All options are types of blind rivet nuts categorized by their base metal material.
## Options at a glance
**7318.16 – Iron/Steel**
- **Defining trait:** Made from ferrous metal, offering high strength and durability.
- **Typical examples:** Structural fasteners in machinery, automotive frames.
- **Best fit when:** High tensile strength and load-bearing capacity are required.
**7415.33 – Copper**
- **Defining trait:** Electrically conductive and corrosion-resistant, often used where conductivity matters.
- **Typical examples:** Electrical grounding points, marine applications.
- **Best fit when:** Conductivity or resistance to oxidation in humid environments is key.
**7508.90 – Nickel**
- **Defining trait:** Excellent heat and corrosion resistance, especially in harsh environments.
- **Typical examples:** Aerospace components, chemical processing equipment.
- **Best fit when:** High temperature or aggressive chemical exposure is expected.
**7616.10 – Aluminium**
- **Defining trait:** Lightweight with good corrosion resistance; non-magnetic.
- **Typical examples:** Aircraft parts, consumer electronics.
- **Best fit when:** Weight reduction and non-magnetic properties are priorities.
**7907.00 – Zinc**
- **Defining trait:** Often used as a coating or in sacrificial applications; less common for structural rivet nuts.
- **Typical examples:** Galvanized fasteners, low-stress connectors.
- **Best fit when:** Corrosion protection via plating or cost-effective use is needed.
**8101.99 – Tungsten**
- **Defining trait:** Extremely high density and melting point; rare for standard rivet nuts.
- **Typical examples:** Specialized industrial tools, radiation shielding.
- **Best fit when:** Extreme hardness or high-temperature resistance is critical (rare use case).
**8102.99 – Molybdenum**
- **Defining trait:** High melting point and strength at elevated temperatures.
- **Typical examples:** Aerospace, furnace components.
- **Best fit when:** Operating in very high-temperature environments.
**8104.90 – Magnesium**
- **Defining trait:** Very lightweight but prone to corrosion; used only in specific aerospace apps.
- **Typical examples:** Lightweight aircraft parts.
- **Best fit when:** Weight savings are essential and environment is controlled.
**8108.90 – Titanium**
- **Defining trait:** High strength-to-weight ratio and excellent corrosion resistance.
- **Typical examples:** Aerospace, medical implants, marine hardware.
- **Best fit when:** Need for lightweight, durable, and corrosion-resistant fasteners.
## Key differences
| Material | Strength | Weight | Corrosion Resistance | Temperature Tolerance | Common Use Case |
|----------------|----------|---------|------------------------|------------------------|----------------------------|
| Iron/Steel | High | Heavy | Moderate | Medium | General industrial |
| Copper | Low | Medium | High | Low | Electrical, marine |
| Nickel | High | Medium | Very High | Very High | Harsh environments |
| Aluminium | Medium | Light | High | Medium | Aerospace, electronics |
| Zinc | Low | Medium | Moderate (coated) | Low | Coated fasteners |
| Tungsten | Very High| Heavy | High | Extremely High | Specialized industrial |
| Molybdenum | High | Medium | High | Extremely High | High-temp applications |
| Magnesium | Low | Very Light | Low | Low | Lightweight aerospace |
| Titanium | High | Light | Very High | High | Critical high-performance |
## How to choose
- Is strength and durability the top priority? → 7318.16
- Does the application involve electricity or moisture? → 7415.33 or 7616.10
- Is it exposed to extreme heat or chemicals? → 7508.90 or 8102.99
- Is weight a major concern? → 7616.10 or 8108.90
- Is the environment highly corrosive? → 7508.90 or 8108.90
## Overlaps & pitfalls
Some materials (e.g., aluminium, titanium) may be used in similar applications (aerospace), so function and environment matter more than material alone. No option is clearly prioritized—choose based on the **main functional requirement** (strength, weight, corrosion, temperature). Avoid assuming "titanium" is always best; it’s expensive and overkill for simple uses