Helicoil is wire thread inserts used to create internal screw threads in materials that are too soft to support a traditional screw thread. These inserts are made from high-strength, corrosion-resistant stainless steel wire that is wound into a helical shape, resembling a tightly coiled spring.

Key Features and Benefits:

1. Strength and Durability: Helicoil inserts provide high-strength threads that are resistant to wear and corrosion. They distribute the load over a larger area, enhancing the strength of the threaded connection.
2. Thread Repair: Helicoil inserts are commonly used to repair damaged or stripped threads, restoring them to their original condition and extending the life of the component.
3. Thread Reinforcement: In softer materials, such as aluminum or magnesium, Helicoil inserts reinforce the threads, preventing damage and ensuring they can withstand repeated use and high loads.
4. Precision: These inserts are designed to provide accurate and consistent threading, which is crucial for applications requiring high precision.
5. Ease of Installation: Helicoil inserts are easy to install using standard tools. They are inserted into pre-drilled holes and then locked into place, providing a secure and reliable threaded connection.

Applications:

1. Automotive: Used in engine blocks, transmission cases, and other components where durable threads are essential.
2. Aerospace: Ensures reliable thread performance in critical applications such as aircraft engines and structural components.
3. Electronics: Provides strong and reliable threads in delicate electronic housings and components.
4. Machinery: Used in industrial machinery for creating and repairing threads in soft or damaged materials.

How It Works:

1. Drill: The damaged or undersized hole is drilled to a specific size.
2. Tap: A special tap is used to cut new threads in the hole.
3. Insert: The Helicoil insert is screwed into the newly cut threads using an installation tool.
4. Break Off Tang: The tang (a small protruding piece of the insert) is broken off, leaving a clean, durable thread.

Advantages:

1. Enhanced Load Distribution: The insert spreads the load over a larger surface area, reducing stress on the parent material.
2. Corrosion Resistance: Made from stainless steel, Helicoil inserts resist rust and corrosion, even in harsh environments.
3. Cost-Effective: Provides a cost-effective solution for repairing or reinforcing threads without needing to replace expensive components.