Why helicoil thread insert is used ?

Helicoil thread inserts are used for several reasons in various industries, particularly in situations where threaded connections may be subject to wear, damage, or need reinforcement. Here are some common reasons why helicoil thread inserts are used:

1. Thread Repair: One of the primary purposes of helicoil inserts is to repair damaged or stripped threads. When the original threads in a hole become worn, corroded, or otherwise compromised, helicoil inserts can restore the functionality of the threads, providing a reliable and durable threaded connection.

2. Improved Thread Strength:Helicoil inserts are often used to improve the strength of threaded connections in materials with low shear strength, such as aluminum or magnesium. The helical design of the insert distributes the load more evenly, reducing the risk of thread failure and increasing the overall strength of the connection.

3. Wear Resistance:In applications where threads are exposed to frequent assembly and disassembly, helicoil inserts can provide enhanced wear resistance. The hardened stainless steel material of many helicoil inserts can withstand repeated use without experiencing the same level of wear as the parent material.

4. Vibration and Shock Absorption:Helicoil inserts help to absorb vibrations and shocks in threaded connections. This is particularly important in automotive, aerospace, and machinery applications where vibrations or sudden impacts can lead to thread loosening or failure. The helical design provides a degree of flexibility, reducing the impact of these external forces.

5. Corrosion Resistance:Helicoil inserts are often made of materials like stainless steel, which offers excellent corrosion resistance. This is crucial in environments where exposure to moisture, chemicals, or corrosive substances could compromise the integrity of the threaded connection.

6. Thread Size Adjustment:In some cases, helicoil inserts are used to adjust the thread size in a hole. This is helpful when a mismatch exists between a threaded fastener and the original tapped hole, allowing for the creation of a new, properly sized threaded connection.

7. Ease of Installation:Helicoil inserts are relatively easy to install using standard tools. This ease of installation makes them a practical and cost-effective solution for thread repair or reinforcement.

8. Weight Reduction:In industries where weight is a critical factor, such as aerospace, helicoil inserts provide a lightweight solution for thread reinforcement compared to alternatives like oversized tapped holes or thicker materials.

In summary, helicoil thread inserts are used to address a variety of challenges related to threaded connections, including repair of damaged threads, improvement of thread strength, resistance to wear and corrosion, and absorption of vibrations and shocks. They offer versatile and effective solutions across different industries.