Loctite suggestions

[mlj427]

I have a cheap red dot I want to install and I think I need to use loctite. Which type is best to hold it but still come apart?
Thanks
Mike

 

[fidelity]

Loctite blue 242/243

 

[Mr. Ed]

Loctite blue 242/243

+1

 

[snake-eye]

Clear finger nail polish will keep screws in place, but not locked like Loctite.

 

[EarnestT]

Loctite purple 222

 

[abr10dr]

2nd on the Purple 222

 

[usa259]

Locktite comes in a chap stick form, stays in place better than the liquid during install. McMaster Carr had it I think.

 

[willtill]

Loctite blue, as recommended so far. I just got done removing a choke from a shotgun which I had to Loctite. Took a little heat to loosen it (used a heat gun).

 

[mlj427]

Thanks everyone I ordered a tube of 243 and will give it a try when it gets here.
Thanks again

 

[OnTarget]

If you only could buy two Loctite's for your firearms, which two would they be? Blue and red? Blue and green? What numbers, if you know.

 

[DutchV]

If you only could buy two Loctite's for your firearms, which two would they be? Blue and red? Blue and green? What numbers, if you know.

Red is usually overkill for guns. Blue or purple are useful without being too strong.

 

[rbird7282]

If you only could buy two Loctite's for your firearms, which two would they be? Blue and red? Blue and green? What numbers, if you know.

620 green for bedding AR barrels and the very rare dab of blue for a screw (and I can’t even tell you the last time I did that) other than that Loctite doesn’t go near my firearms


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[EarnestT]

purple 222 is all I need

 

[OnTarget]

purple 222 is all I need

Low strength ? Or medium?

Thank you!

 

[EarnestT]

Low strength ? Or medium?

Thank you!

low strength removable with hand tools. It has never let me down

definitely the one for small screws

 

[Occam]

Don’t forget a tube of Vibra-Tite VC3. Gummy, reusable red/pink stuff that smells bad.

But unlike loctite it doesn’t harden. It’s perfect for things like kydex holster screws when you might want to make an adjustment.

 

[Winged Pig]

http://wdarc.org/Loctite Guide.pdf

 

[mlj427]

Thank you everyone. Good information.

 

[Doco Overboard]

For gun screws that you don't want to move, heat them up and install them while they're hot. When they shrink they'll be tight as can be and very hard to remove. ( Make sure you want them to be more or less permanent or very rarely disassembled.)
Sometimes chasing the threads and carefully cleaning the screw/threads with a solvent or even using alternate screws makes a better fit then you could just stake once they are in place.
When I use a thread compound I use black finger nail polish, just a dab on the threads and not accumulated in the bottom of a blind hole. That way the compound doesn't puddle at the base of the screw,dry harden and crack over time and just get loose again.
I have used both blue and red loc-tite in the past, sometimes I cant tell if it works any better than finger nail polish for very small screws like you find on bases. Cleanliness and fit is what keeps them tight anyway.

 

[Bountied]

Dab of blue Loctite on the threads is all you need. I use a paper clip to apply an amount like you see on Magpul screws that come with their M-Lok parts. It's really not complicated, don't over think it.