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Securing a loose screw on the EF 100-400ii

Started 3 months ago | Discussions thread
Steve Balcombe Forum Pro • Posts: 15,582
Re: Securing a loose screw on the EF 100-400ii
1

Swervin Mervin wrote:

I've got an annoying loose screw on the mount on my 100-400 that works it's way loose every few weeks. I tighten it up and it always comes loose again.

There's something about the 100-400L II - I've had exactly the same problem with the same lens.

I've read up and people have suggested Loctite Blue

Yes, Loctite 243 as mentioned by another poster. Works perfectly.

Just wondering if anyone can confirm if this is the right stuff?

https://www.amazon.co.uk/dp/B07BP9JPC9?th=1

I don't recognise that packaging, but search for Loctite 243.

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