Ar15 gas key screw !!

Discussion in 'Rifle Discussion' started by usmc, Dec 30, 2015.

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  1. usmc

    usmc
    oregon
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    So I bought a brand new inch lbs torque wrench and attempted to torque the gas key screws. I set my inch pound wrench to 50 inch lbs, and SNAP. Removed screw placed another one, set to 30 ilb, then SNAP. So I bought "supposedly better screws" . Set to 20 ilbs and ......SNAP. Am I a complete idiot or do I need better screws?
     
  2. deadeye

    deadeye
    Albany,OR.
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    Maybe a better torque wrench?
     
  3. jbett98

    jbett98
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    Does it say "Made in China" on the side of the torque wrench?
     
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  4. x2ndxall

    x2ndxall
    WA
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    And you stopped when it clicked?
     
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  5. Velzey

    Velzey
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    Should be using grade 8 socket head cap screws. I think 55 inch pounds is the mil standard.

    Its only about 4.5 foot pounds, and make sure you stake them in place!
     
  6. jbett98

    jbett98
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    Remember to back off the torque wrench to zero when finished.
    Otherwise, you will change the torque setting calibrations.
     
  7. Stomper

    Stomper
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    As mentioned; don't go cheap on torque wrenches, or proper shear strength bolts.
     
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  8. usmc

    usmc
    oregon
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    Thanks , guys, so turns out I'm a complete moron. The click was so faint I couldn't feel it. Now I got a feel for it and they worked out great. pshh....:oops:
     
  9. jbett98

    jbett98
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    Hey, at least you knew the difference between foot lbs and inch lbs.
    I had to learn the hard way. I didn't even know they made inch lb torque wrenches and was even more clueless about the inch to lb torque conversion charts.
     
    Last edited: Dec 30, 2015
  10. Velzey

    Velzey
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    So I have been using 4.5 lbs all these years, now they are all going to come loose.:(. Oh wait no, I made sure they won't because I staked them properly! :) And staking is critical when your running full auto!
     
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  11. Stomper

    Stomper
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    Inch-pounds divided by 12 equals foot-pounds.... yeah? o_O;)
     
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  12. rick benjamin

    rick benjamin
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