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  1. #1
    Senior Member FALover's Avatar
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    Threadlocking Questions

    Ok, I am assembling a Glock clone from assorted parts. I have a set of fixed Meprolight that are part of this build. Their instructions say to use Loctite 609 or equivalent on the front sight screw and the rear sight. I cant find anything Loctite around here, everyplace I go has Permatex products. Question is what do you folks recommend. I am new to this and have no desire to FUBAR this project. Thanks in advance, FAL.
    GET OFF MY LAWN!

  2. #2
    The Gunsmithing Moderator blacksmithden's Avatar
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    Jesus, 609 is bearing retainer. Dont use that unless you never want it to come apart again without some pretty heavy heating. Use blue Permatex for "you can take it out without heat" thread locking. Red is higher strength and you can sometimes take it out without heat but its harder to do. I'd try blue first. If that comes loose (likely wont) then use red. On two very closely matching parts like a bearing on a shaft, the 609 green stuff is damned near the liquid form of welding.
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  4. #3
    Senior Member FALover's Avatar
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    From their on-line instructions.

    Rear Sight Installation
    Make sure that the ML-10224 rear sight fits into the dovetail recess. If
    the sight does not fit, carefully reduce the width of the sight's dovetail,
    using a fine file.
    Clean all contacting surfaces of the dovetail and sight from any gun
    oil residue with a suitable solvent - acetone or the like - and then wipe
    them clean and dry.
    Coat all contacting surfaces of the sight and dovetail recess with a
    thin, evenly distributed layer of glue. Use only LOCTITE
    609 glue, or
    equivalent. NOTE: Follow LOCTITE
    609 instructions.
    Fit the sight into the dovetail recess from the right hand side, such
    that the embedded tritium lights are facing the shooter. Use a sight
    pusher to insert and adjust (left or right) as needed.
    NOTE: Make sure that the adjustment is made long before the
    LOCTITE
    609 cures. After adjustment, allow a minimum of 8 hours
    for thorough curing of the glue.


    I will use the Blue stuff to start. The sights should not come out even without the goop. Very snug fit with the use of the pushing tool.
    GET OFF MY LAWN!

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  6. #4
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    As state, blue "removable" or "medium strength"

  7. #5
    Senior Member Camo tung's Avatar
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    If you're in love with Locktite products their blue 242 is what you're after. Your friendly local PA carries Permatex products (my fav) and in their product line you'll want either the blue liquid or the orange gel, both of which will remove with hand tools. Their red requires heat and huffin and puffin just like the Locktite brand.
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  8. #6
    Senior Member Grimlock's Avatar
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    There are people that use red because blue often isn't enough. I would think blue is enough for a dovetailed sight. Green is pretty much forever, so if you're going to use it do it right the first time.

  9. #7
    Senior Member FALover's Avatar
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    Blue sounds more and more like the winner. These Tritium sights are too damned expensive to screw up.
    GET OFF MY LAWN!

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  11. #8
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    I'm more of a super glue type of guy myself...
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  12. #9
    Senior Member Camo tung's Avatar
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    Quote Originally Posted by firemachine69 View Post
    I'm more of a super glue type of guy myself...
    That'll teach you to run out of JB Weld!
    "It is an absolute truism that law-abiding, armed citizens pose no threat to other law-abiding citizens."

    Ammo, camo and things that go "blammo".

    “That rifle on the wall of the labourer's cottage or working class flat is the symbol of democracy. It is our job to see that it stays there.” ― George Orwell

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