Does Loctite Cause Helicoils to Fail During Screw Removal?

  • Thread starter PhillipK
  • Start date
In summary, the customer is insisting on using Loctite on screws for standard M2.5 Helicoil STI holes, but this causes issues when trying to remove the screws in the future as the Helicoil also comes out. The company has recommended using locking Helicoils instead, but the customer has ignored this advice. The person is looking for documentation to convince the customer that Loctite should not be used on Helicoils, but Helicoil does not have any official documentation supporting this and only makes the same recommendation to switch to locking Helicoils. The suggestion is to quote Helicoil's recommendation or conduct a test to prove that Loctite is not necessary, and to use Loctite
  • #1
PhillipK
1
0
We have a customer who insist's on applying loctite on screws before installing them in standard M2.5 Helicoil STI holes. The problem is if they need to remove the screw the Helicoil comes out with the screw. We have recommended that they make a change to the drawing to call out for locking Helicoils but it would appear they have ignored this advise. We end up re-installing new Helicoils which is a logistical nightmare as the customer is in singapore.

Question: Is there any documentation I can get my hands on to convince them that Loctite should not be used on Helicoils they may need to be removed at some point in the future. I have contacted Helicoil and while they will tell you not to do it they have no documentation to support the position, they just make the same recommendation that we do, to switch to locking Helicoils.

Any help would be welcome

Phillip
 
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  • #2
Quote Helicoil's recommendation, or commission a test to prove that Loctite isn't necessary.
 
  • #3
use loctite thread locker RED 271 to permanently lock the helicoil
use loctite thread locker Blue 242 on bolt as this is used where disassembly to service is required but still want to "lock " the bolt in
 

FAQ: Does Loctite Cause Helicoils to Fail During Screw Removal?

What is Loctite and how does it work with Helicoils?

Loctite is a brand of adhesive that is commonly used in industrial and mechanical applications. It works by creating a strong bond between two surfaces, preventing them from coming apart. When used with Helicoils, Loctite helps secure the Helicoil in place and prevents it from loosening or falling out.

Is it necessary to use Loctite when installing Helicoils?

While it is not always necessary to use Loctite when installing Helicoils, it is highly recommended. The use of Loctite ensures a stronger and more secure bond between the Helicoil and the surrounding material, preventing potential issues such as thread stripping or loosening over time.

3. What type of Loctite should be used with Helicoils?

There are several types of Loctite available, and the best one to use with Helicoils is the medium strength or "blue" Loctite. This type provides a strong bond while still allowing for future removal if necessary. High strength or "red" Loctite should not be used as it may make it difficult to remove the Helicoil in the future.

4. Can Loctite be used with all types of Helicoils?

Loctite can be used with most types of Helicoils, but it is important to check the manufacturer's instructions to ensure compatibility. Some Helicoils, such as those made of plastic, may not work well with Loctite and may require a different adhesive or method of installation.

5. Is there a specific method for applying Loctite to Helicoils?

Yes, there is a specific method for applying Loctite to Helicoils. First, clean the Helicoil and the surrounding material with a degreaser to remove any oils or debris. Then, apply a small amount of Loctite to the threads of the Helicoil, being careful not to use too much. Finally, insert the Helicoil into the hole and allow it to cure according to the manufacturer's instructions before using.

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