L390 Series Thread Inserts

The best material for threaded inserts depends on the application, load requirements, environmental conditions, and the base material into which the insert is being installed. Here’s a breakdown of common materials used for self-tapping threaded inserts and their best uses:

1. Brass (Best for Soft Materials & Corrosion Resistance)

• Pros:

  • Excellent corrosion resistance (good for humid or mildly corrosive environments).

  • Softer than steel, making it ideal for self-tapping into plastic, wood, or soft metals (e.g., aluminum).

  • Good electrical conductivity (useful in electronics).

• Cons:

  • Lower strength compared to steel, not suitable for high-load applications.

• Best For:

  • Plastic enclosures, wood furniture, electrical applications, and light-duty metal assemblies.

2. Steel (Carbon or Alloy) (Best for High Strength & Durability)

• Pros:

  • High strength and durability, suitable for heavy-duty applications.

  • Can be heat-treated for increased hardness.

  • Works well in metals (aluminum, magnesium, cast iron).

• Cons:

  • Prone to rust unless coated (e.g., zinc plating).

• Best For:

  • Automotive, machinery, and industrial applications where high torque and load-bearing capacity are needed.

3. Stainless Steel (Best for Corrosive Environments)

• Pros:

  • Excellent corrosion resistance (ideal for marine, chemical, or outdoor applications).

  • Stronger than brass but not as hard as carbon steel.

• Cons:

  • More expensive than carbon steel or brass.

  • Can gall (cold-weld) during installation in some metals.

• Best For:

  • Food processing equipment, medical devices, marine hardware, and outdoor applications.

4. Aluminum (Lightweight & Non-Corrosive, but Lower Strength)

• Pros:

  • Lightweight and corrosion-resistant.

  • Good for soft materials like plastic or thin aluminum sheets.

• Cons:

  • Weakest option, not suitable for high-stress applications.

• Best For:

  • Aerospace, lightweight electronics, and non-load-bearing applications.

5. Nylon or Plastic (Non-Metallic, Insulating)

• Pros:

  • Non-conductive, lightweight, and resistant to chemicals.

  • No risk of galvanic corrosion.

• Cons:

  • Very low strength, only for light-duty plastic or wood applications.

• Best For:

  • Electronics, consumer products, and applications requiring electrical insulation.