Procedure for using Loctite

[Mike357]

Can someone tell me if and when I should use loctite for securing screws on scope bases and rings? First up would be base and rings on the 44mag Marlin.

How do you release it?

[Robin128]

I have only ever used it to secure my rails to receivers.

I once had to change a straight rail to a MOA and it really did not want to release...but I resealed the replacement one...I used Loctite 572 thread sealant. Don't use the permanent sealer for this purpose.

http://www.screwfix.com/p/loctite-pipe- ... -63g/72039

I never use it on rings nor bases...no need.

HTH

[ShootingSight]

Loctite is available in several varieties, from temporary to permanent. All of it, even the permanent can be loosened by the judicious application of heat from a propane torch. Just beware of what else the torch might damage.

Art

[ovenpaa]

You can use hot air as an alternative to a naked flame, the hot air paint strippers work well, also a soldering iron with a clean tip applied directly to the screw head can work but is painfully slow and neither of these are going to be a good option for 'scope rings.

I also only use loctite is on the rail itself.

[R.G.C]

You can use hot air as an alternative to a naked flame, the hot air paint strippers work well, also a soldering iron with a clean tip applied directly to the screw head can work but is painfully slow and neither of these are going to be a good option for 'scope rings.

I also only use loctite is on the rail itself.

Ovenpaa et all

It is always to be carefull with heat. Hot air blowers heat large surfaces. Better perhaps is to use a hot metal rod in contact with the screw head (soldering iron).

Loctite threadlocks exists in 3 grades:
-#222, light; for assemblies asking for easy removal
- #243, medium, still allow looseningwiht more effort
- #270, for fottings not intended to be loosened.

They are threadlocks, little surface glueig efficiency.

Now, In the rare cases I had to use threadlocking (I hate even it), I preferred tp use adhesives:
- Loctite #603, rather fluid, for interferences less than 0,1-0,2mm)
- #638, little stronger bond and allowing more clearances between parts.

As it is for fixing mounts or bases, better to use one of those two, just making the parts to glue together, avoiding as much as possible for it to flow in the tappings..

Loctite products are ( ) expensive here and they are sold in 50mml flasks only. There are other products, sold in 20mml bottles, much, much less expensive. They bear the same last digits reference as the Loctite equivalent. The last I used is Vary/Bond and number is 16-38, equivalent to 638.

Hope this jelp.
R.G.C

[ShootingSight]

Robert,

Great to hear from you - I hope all is well.

Art

[spud]

mike DO NOT use loctite on scope Mike , Torque them up instead

pm me if you need help with this

[R.G.C]

Robert,

Great to hear from you - I hope all is well.

Art

Art,

Yes, everything as good as possible. How far are you in your last project started after our talks at Nuremebrg?

Please to see you contributing to this very active and interesting forum..

Fellows forum members, if you have any shooting-related optical quetion, just ask Shooting Sight , you will have the right answer.A well of science in this field (and others, I know).

http://www.shootingsight.com/

His set of testing glasses is a wonder. I have helped many friedns finding their right correction since I have one.

ATB
R.

[R.G.C]

mike DO NOT use loctite on scope Mike , Torque them up instead

pm me if you need help with this

This is a doctrinal way of thoughts only..

I hate Loctite threadlocks, but l know the virtues of the modern technical adhesives who are evrywhere in to day's life...

Each screw has its specific torque and overtorqueing can/will shear them away under recoil if the parts are moving under shocks to act as a shear.

A correct application of 603 or 638 is invisible and does more work than over-tightened screws.

R.G.C

[Mike357]

The loading gate screw on my Marlin will not stay tight and requires constant tightening up.

Am I ok to use a spot of Loctite and if of so which one and do I just put a little spot on the thread and tighten up?