[New Kid on the Glock]

So I finally got my TruGlow TFX Pro front sight aligned on my G19 about as good as I'm going to get it myself. However I really don't want to take the screw back out (as I'm worried it partially stripped), and then I have to fiddle with straightening the front sight for 2 days again because of my OCD lol.

I know everyone suggest the blue (242) Loctite, but that is when you're applying to the actualy thread on the screw and then inserting it to dry. I'm trying to avoid having to do this. I found this "Penetrating 290 green Loctite" that is supposed to add adhesive to the threads of pre-assembled screws/fasteners.

Does anyone have any experience with this particular penetrating Loctite? My front sight definitely needs to be tightened down more, but I really don't want to take it out and install is again. Thanks for any help and

suggestions!

 

[SJ 40]

I've always used blue and never lost a Glock front sight over all the years but when the tritium vial went dead I as also able to replace it.

 

[New Kid on the Glock]

I've always used blue and never lost a Glock front sight over all the years but when the tritium vial went dead I as also able to replace it.

Did You put blue on once the screw was already in, and then just dab it around the head of the screw? Thats my issue, I really don't want to try and loosen that front sight screw again, I'm worried I stripped it, I finally have the sights as straight as I'm going to get them.

I'm just trying to lock them in place without having to take out the screw again to apply the loctite to the threaded part of the screw. I was wondering if anyone had any experience with this (290 Green) Loctite, or something similar, which is supposed to penetrate an already installed screw and get inside there without having to take it back out and apply it directly to the screw itself. I really don't wanna mess with thst front sight screw any more lol. Just wanna lock it in place.

Appreciate your feedback brotha.

 

[Silver-Bolt]

The penetrating Loctite works but not if the screw is fully seated and torqued. The liquid follows the helix of the screw thread. If it is torqued in place it will not flow. Back the screw out so a couple of threads are exposed. Apply the 290, give it a few seconds to flow down the threads, and re-torque.

 

[SJ 40]

Did You put blue on once the screw was already in, and then just dab it around the head of the screw? Thats my issue, I really don't want to try and loosen that front sight screw again, I'm worried I stripped it, I finally have the sights as straight as I'm going to get them.

I'm just trying to lock them in place without having to take out the screw again to apply the loctite to the threaded part of the screw. I was wondering if anyone had any experience with this (290 Green) Loctite, or something similar, which is supposed to penetrate an already installed screw and get inside there without having to take it back out and apply it directly to the screw itself. I really don't wanna mess with thst front sight screw any more lol. Just wanna lock it in place.

Appreciate your feedback brotha.

Do as Silvebolt recommends and the screw will be held in place and not back out under recoil,I usually am replacing a dead tritium sight so I apply to the threads but either way will retain the screw.

 

[SixG17s]

Don't use thread locker, use a thread sealer. I've put on over 300 sight sets on Glocks since 92, and never had an issue with any them. These guys are avid competitors and training junkies. Permatex # 2 never fully cures and is completely resistant to hydrocarbons. Thread lockers eventually will crack, and have to be heated to be removed.

Henkel Locktite #222 is the lowest value thread locker at 56 inch-lbs.

 

[Dog Face Gremlin]

So it's Permatex #2 instead of Loctite you say......

 

[SixG17s]

Yup. Back in the 70's I used to use thread locker. One day I couldn't find any so I tried the Permatex and it turned out to be great for sight screws.

 

[3404speed]

Use blue medium strength loc tite. Apply a small amount to the threads, assemble and torque. allow to sit for 24 hours before use.

 

[SixG17s]

The blues are too high a torque value for small screws at 106 inch lbs.

 

[3404speed]

The blues are too high a torque value for small screws at 106 inch lbs.

ive never had any problem using the blue. If the threads are clean and dry it will work

 

[SixG17s]

Glocks use a 3-56 thread and the torque should be about 54 inch lbs. Henkel Locktite # 222 is for that value.

 

[New Kid on the Glock]

Well the blue is in there. So it is what it is now! Everything I've read recommends the blue. In fact I just brought it up to my local gunsmith to have him align it all and apply the Loctite just to ease my concerns about not doing it properly and he said always blue.

 

[RIP]

Well the blue is in there. So it is what it is now! Everything I've read recommends the blue. In fact I just brought it up to my local gunsmith to have him align it all and apply the Loctite just to ease my concerns about not doing it properly and he said always blue.

You trust someone else to alight your sites? I guess your ocd is minimal.

 

[3404speed]

Ive never had any problem with a front sight coming loose or removing one with the blue, the blue 243 is also listed as resistant to oil but i dont see it listed with the purple 222. The permatex blue lists fastener sizes 6mm-20mm. It works for all my uses

 

[Silver-Bolt]

The blues are too high a torque value for small screws at 106 inch lbs.

Six,
The break away torque rating is directly related to the diameter of the screw. A screw with a diameter of the front sight screw will not have a 106in/lb break away. It doe not have enough surface area to achieve that strength. Perhaps on a large diameter bolt you might see the 106in/lbs.

 

[SixG17s]

^^^ Correct. However I have seen screws with the head sheared off from using the blue thread locker. The undercut is the smallest diameter on the screw.

 

[New Kid on the Glock]

You trust someone else to alight your sites? I guess your ocd is minimal.

Lol I trust someone who does it professionally more than myself. I'm sure my ocd will kick again after I fire it and look at it at 50 different angles trying to find any flaw lol.

 

[SixG17s]

Kid, Glocks are just hammers, except hammers have a better grip angle. Don't OCD on a Glock, maybe on a $6,000 1911, but not a Glock.

Go function fire it first.

 

[New Kid on the Glock]

Kid, Glocks are just hammers, except hammers have a better grip angle. Don't OCD on a Glock, maybe on a $6,000 1911, but not a Glock.

Go function fire it first.

View attachment 282183

You said it well my man.

A Glock is a much more fun tool though lol.