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Securing a loose screw on the EF 100-400ii

Started 3 months ago | Discussions thread
Andy01 Veteran Member • Posts: 5,191
Re: Securing a loose screw on the EF 100-400ii
1

Loctite 243 (Blue) is the one you want (which I believe is what the OP linked above).

242 is the "older" version of 243, and is very slightly weaker, and less oil resistant, meaning that the threads have been be cleaned thoroughly for it to work properly. This may, of course, not be a problem on a camera lens, so I am sure that 242 would work as well - if it is still available.

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