Heli-Coil

Heli-Coil: A Professional Mechanic's Guide

Heli-coils are a type of threaded insert that can be used to repair damaged threads in a variety of materials, including metal, plastic, and fiberglass. They are typically used in automotive applications, but can also be found in other industries such as aerospace, marine, and construction.

Heli-coils are made from a high-strength alloy that is resistant to corrosion and wear. They are installed by drilling out the damaged threads and then tapping the insert into place. Once installed, the heli-coil will provide a permanent repair that is stronger than the original threads.

Heli-coils are available in a variety of sizes and thread pitches, so they can be used to repair a wide range of damaged threads. They are also relatively easy to install, making them a popular choice for automotive mechanics and other professionals who need to make quick and efficient repairs.

Types of Heli-coils

There are two main types of heli-coils:

• Internal heli-coils are installed in a hole that is drilled into the damaged part.
• External heli-coils are installed on the outside of a part that has damaged threads.

Internal heli-coils are more common than external heli-coils, and they are typically used to repair threads in internal components such as engine blocks and transmission housings. External heli-coils are sometimes used to repair threads on external components such as bolts and studs.

Benefits of Heli-coils

There are a number of benefits to using heli-coils to repair damaged threads, including:

• Strength: Heli-coils are made from a high-strength alloy that is resistant to corrosion and wear. This makes them a more durable repair than simply replacing the damaged threads with a new bolt or stud.
• Speed: Heli-coils are relatively easy to install, making them a quick and efficient repair option.
• Affordability: Heli-coils are typically less expensive than replacing the damaged part altogether.

Conclusion

Heli-coils are a versatile and effective way to repair damaged threads. They are available in a variety of sizes and thread pitches, and they are relatively easy to install. If you are an automotive mechanic or other professional who needs to make a quick and efficient repair, heli-coils are a great option.

Bulleted list of types of heli-coils:

• Internal heli-coils
• External heli-coils