Loctite type question

This topic has 9 replies, 8 voices, and was last updated 26 November 2017 at 15:12 by Michael Gilligan.

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26 November 2017 at 11:06 #329212
Steve Crow
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@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
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26 November 2017 at 11:06 #25664
Steve Crow
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@stevecrow46066
26 November 2017 at 11:28 #329215
Emgee
Participant
@emgee
Hi Steve

**LINK**

Threadloc 395 here looks suitable

Emgee

typo again.

Edited By Emgee on 26/11/2017 11:30:14
26 November 2017 at 11:28 #329216
Tony Pratt 1
Participant
@tonypratt1
One of the many thread locking products will be what you are after.

Tony
26 November 2017 at 11:37 #329219
Chris Evans 6
Participant
@chrisevans6
Thread lock put on vary sparingly with a cocktail stick.
26 November 2017 at 11:40 #329220
john carruthers
Participant
@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.
26 November 2017 at 12:00 #329221
Michael Gilligan
Participant
@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
26 November 2017 at 13:32 #329230
JohnF
Participant
@johnf59703
Agreed Michael but I think 221 low viscosity may be better in view of the thread size.
John
26 November 2017 at 15:01 #329234
nigel jones 5
Participant
@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.
26 November 2017 at 15:12 #329236
Michael Gilligan
Participant
@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.
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