Tap recommendation for 4140
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  1. #1
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    Oct 2011
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    Default Tap recommendation for 4140

    I need a recommendation for a 10-24 tap in 4140 steel non PH. It will be used in with rigid tappping in 1999 Hurco BMC. I will have about 60 holes to do and they will be blind and approximately .5" deep.

    This is a single part so I'm mnot real worried about optimum speed I just don't want to dig out any broken taps because the component is rather large and complex.

    Do I use a form or cutting tap?

  2. #2
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    Jun 2012
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    Michigan
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    Default

    You want a spiral flute tap
    Guhring, Inc. - Tool List


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