This might be a stupid question but…….

Forums General Discussion This might be a stupid question but…….

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    Micbro
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    If I use an M5 heli coil kit to fit a rail to my bobcat, will an M5 bolt fit the thread? I’m a complete novice at this kind of thing and want to get it right first time.

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    BitFrost
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    The threads also have to match, not just the size of bolt.
    There are different types of thread “distances”(not sure what it’s called in English).
    P.S “The wise man doesn’t give the right answers, he poses the right questions.” -Claude Levi Strauss

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    Micbro
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    Now I’m even more confused

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    Strever
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    i don’t think M5 has different thread pitches like some of the other mostly smaller metric sizes
    if you get helicoils for an M5 then M5 is what fits
    it will require a larger tap to install the helicoil

     

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    Deleted Account

    Yes. A m5 bolt will fit that thread.

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    Micbro
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    Thanks guys 

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    TedV
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    M5 is available in both coarse, .8mm and fine .5mm thread pitch. You might want to verify what you have and need. The old measure twice, cut once kind of thing. M5x.8 is more common but I’ve been screwed by hard to find fine pitch many times. (Pun intended)

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    30cal
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    T-nuts are stronger for soft material like plastic and wood: http://www.amazon.com/Hillman-Group-180297-Pronged-100-Pack/dp/B000H61YF2/ref=sr_1_8?s=industrial&ie=UTF8&qid=1454256329&sr=1-8  Helicoils are for repairing threads in metal.

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    Strever
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    “TedV”M5 is available in both coarse, .8mm and fine .5mm thread pitch. You might want to verify what you have and need. The old measure twice, cut once kind of thing. M5x.8 is more common but I’ve been screwed by hard to find fine pitch many times. (Pun intended)

    
how come the charts only show the M5 with a .8mm pitch NOT a .5mm pitch ? 
    does that mean they don’t make the fine pitch for purchase ?

    https://www.boltdepot.com/fastener-information/measuring/metric-thread-pitch.aspx
     

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    AAS510_IRL
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    “Micbro”If I use an M5 heli coil kit to fit a rail to my bobcat, will an M5 bolt fit the thread? I’m a complete novice at this kind of thing and want to get it right first time.

    
Yes.
    You will need to predrill & tap using the supplied M6 tap from the helicoil kit before inserting the M5 helicoil.
    Into Aluminium (which I assume the Bbobcat is) predrill 5.2mm diameter x 12.3mm deep inorder to achieve 1d thread depth ie 5mm deep thread.
    Then use the M6 supplied tap.
    The thread pitch of the helicoil will be M5 x 0.8. You will not get an M5 x 0.5 pitch helicoil. Typically only start at M8 and above.
     

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    Micbro
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    Thanks for the info, I’m still waiting for my atlas rail to arrive. Can’t wait to get it mounted.

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    Mr.Gadgets
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     P.S “The wise man doesn’t give the right answers, he poses the right questions.” -Claude Levi Strauss

    
”A wise man doesn’t know all the answers, a wise man knows where to find the answers” – Mr. Gadgets

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    Micbro
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    And this is where I find my answers 

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    BitFrost
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    “Mr.Gadgets”

     P.S “The wise man doesn’t give the right answers, he poses the right questions.” -Claude Levi Strauss

    
”A wise man doesn’t know all the answers, a wise man knows where to find the answers” – Mr. Gadgets

    
That’ll do :)

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