Loctite type question

[Steve CrowParticipant @stevecrow46066]

I am looking for some way of securing small screws from vibration etc.

The screws are steel 12BA going into tapped brass and brass nuts.

It is important that the bond is temporary, I want to be able to break it without damaging things. It might be asking a bit much but it would help if it was invisible as well.

Looking at the Loctite website just confuses me more – there are so many different products and I don't know how there properties will scale down to tiny screws. They are not cheap either.

Would a superglue bond be breakable? Do clockmakers use shellac?

Has anybody have any suggestions or experience with this sort of thing?

Many thanks

Steve

[Steve CrowParticipant @stevecrow46066]

[EmgeeParticipant @emgee]

Hi Steve

**LINK**

Threadloc 395 here looks suitable

Emgee

typo again.

Edited By Emgee on 26/11/2017 11:30:14

[Tony Pratt 1Participant @tonypratt1]

One of the many thread locking products will be what you are after.

Tony

[Chris Evans 6Participant @chrisevans6]

Thread lock put on vary sparingly with a cocktail stick.

[john carruthersParticipant @johncarruthers46255]

Thread locker. It can be dismantled, if stuborn a bit of heat helps loosen it.
I use a dab of nail varnish as a temporary locker.

[Michael GilliganParticipant @michaelgilligan61133]

For 12BA screws … Loctite 222 is a good place to start

MichaelG.

.

http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802623422465

Note: The illustration on that page is not particularly helpful !!

Edited By Michael Gilligan on 26/11/2017 12:03:06

[JohnFParticipant @johnf59703]

Agreed Michael but I think 221 low viscosity may be better in view of the thread size.
John

[nigel jones 5Participant @nigeljones5]

I wouldnt put anything with the loctite threadlock logo anywhere near a 12ba nut or bolt, even their very weak bearing retainer is likely to cause the thread to break, I know this from experience. Try a minute dab of clear silicone sealant first is my advice and I use loctite products almost daily.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by JohnF on 26/11/2017 13:32:24:

Agreed Michael but I think 221 low viscosity may be better in view of the thread size.
John

.

Quite possibly, John

I really wouldn't want to choose beteween them without considering the detail of the requirement and Steve's preferred method of application.

At the risk of tempting providence: I happen to have 222 in stock, and I've never [yet] had a problem using it on very small screws.

MichaelG.

[Author]

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