Threaded Inserts for Aluminum Bolt Threaded Inserts Threaded Inserts for Metal

Descrizione

What Are Threaded Inserts for Aluminum?

Threaded inserts for aluminum are precision fastening components engineered to create durable, high-strength threaded connections in aluminum alloys. They address aluminum’s softness and low thread fatigue resistance, providing reliable threads that withstand repeated assembly cycles and vibration.

Threaded Inserts for Aluminum: Specifications

1. Material

• Stainless Steel (304/316): Optimal corrosion resistance for marine/aerospace

• Carbon Steel (Grade 8): High tensile strength for structural applications

• Aluminum Bronze (C95400): Superior galling resistance for high-temp use

• Titanium (Grade 5): Ultimate strength-to-weight ratio

2. Surface Treatment

• Hard Anodizing: 50+ micron thickness for extreme wear resistance

• Nickel-Teflon® Coating: Dry lubricant properties (μ<0.2)

• Geomet® Coating: Anti-seize performance to 1000°C

• Silver Plating: Electrical conductivity for grounding applications

3. Common Specifications

• Thread Range: M3-M24 (metric), #6-1″ (UNC/UNF)

• Installation: Keysert®, Rivetnut®, or helical coil systems

• Special Features: Locking flute designs for vibration resistance

• Standards: NASM 33537, MS 21206, ISO 15480

4. Applications

• Aerospace: Airframe structural connections

• EV Battery Packs: High-current busbar connections

• Military Optics: Vibration-proof sight mounts

• Marine: Saltwater-exposed hull components

Excellent  Case: Helicopter Rotor Blade Retention System

Challenge:
A helicopter OEM experienced thread pull-out failures in 7075-T6 aluminum rotor mounts after 800 flight hours, requiring premature blade replacements.

Solution:

• Installed titanium thread inserts (M10x1.5, hard anodized) using Keysert® technology:

  • Fatigue Life: Achieved 5,000+ stress cycles (MIL-STD-1312-21)

  • Corrosion Protection: Passed 1,000hr salt fog testing

  • Weight Savings: 40% lighter than steel alternatives

Results:

• Extended service interval from 800 to 5,000 flight hours

• Reduced unscheduled maintenance by 72%

• Achieved FAA AC 29-2C compliance

Key Advantages

✔ 8X Higher Pull-Out Strength vs. direct aluminum threads
✔ Thermal Stability: Maintains clamp load from -65°F to +350°F
✔ EMI Shielding: Optional conductive coatings available