Loctite

[Lexington-1]

Gents

Recently the screws that secures my scope rail to the receiver of my 10/22 came loose. What type of bond do you recommend to secure the screws, red loctite, blue locktite or something else?

Thanks

[jfifer]

Red loctite is strongest. If you ever need it off heatgun will make it easiest.

[chillincody]

red loctite is perm I use blue locktite on all the screws that I dont want backing out and havent had a issue

[mitchsti]

^^ What he said blue should be more than enough on a 10/22

[baih777]

blue loctite, clean threads with brake or electrical cleaner, let sit overnight to dry.

[ljgrasso]

As stated above, blue is great way to go for most uses.

[1lostinspace]

Rail to receiver use purple and get it over with

[Gunsmith Dan]

Yes never use red on firearms screws ..... because they will be the screws you will need to remove to fix the firearm (ahh Murphy's law).

[kcstott]

There is no reason to use loctite on a scope base.

What you need to do is clean the holes and screws with alcohol or acetone. Remove all traces of oil and grease. Then install your mount install your screws and tighten. Then get a punch that fits the outside diameter of the screw head and give the screw a gentle tap. What this does is gets everything to set and settle down. By doing this you can get one half to one full turn of additional torque on the screw. Tap the screw again and keep tightening to the same tension until you can't get anymore movement. Thats is the tightest that screw and base is going to get

I've installed many scopes this way and never had one come back lose even on the heaviest of magnums.
Loctite is just not needed. But if you insist there is a lower grade then blue and FYI loctite colors mean nothing. There are about three grades of "red" and at least three of "blue" that I know of.
Anyway if you want to lock something with no chance of it becoming permanent use low strength 222 purple loctite.

[ar15barrels]

FYI loctite colors mean nothing. There are about three grades of "red" and at least three of "blue" that I know of.
Anyway if you want to lock something with no chance of it becoming permanent use low strength 222 purple loctite.

For other people's benefit more than yours...

The color determines the relative holding power.
Purple is vibration only, for holding adjustments.
Blue is locking, tool removable.
Red is locking, permanent.
Red is not really permanent if you heat it up past its rated temperature.

The different grades within each color are the viscosity.
Thinner viscosity is for finer threads and thinner gaps between internal threads and the screw.
Thicker viscosity fills the thicker gaps in coarser threads.
Thinner grades are like water.
Thicker grades are like maple syrup.
I prefer and use the thicker grades as they stay where you put them without wicking everywhere...

[Lexington-1]

Thanks for the great info gents. Much appreciated.