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hsuryaprakash1-Visitor
1-Visitor
August 24, 2014
Solved

How to calculate the depth of hole thread if it is bind hole ?

  • August 24, 2014
  • 2 replies
  • 36849 views

Hi

Pls find th eimage

How to calculate the depth of hole thread if it is bind hole ?

Details ;

M10x1.5, 40 length , thread length 26 mm

Over all assemble length 40 mm

    Best answer by TomD.inPDX

    3.75 is 2.5 * 1.5mm and the 1mm is for good measure (actually, it is part of the formula posted above)

    Please remember that you have to consider the type of thread tapping method you are using. 2.5 * pitch is for roll formed threads.

    2 replies

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    HARSHVARDHANPAN1-Visitor
    1-Visitor
    August 24, 2014

    Haris,

    according to me go on Right tool chest where you got Hole option go through this, Now this will open sub option it contain shape option where you able to see and provide standard dimension as sown in capture PNG image

    T
    TomD.inPDX17-Peridot
    17-Peridot
    August 24, 2014

    It depends on what type of tap is being used. First of all you need a counterbore or pre-drill for the unthreaded part of that particular screw. This requires a separate feature created before the threaded hole so the cosmetic thread has a good start surface.

    This is a pretty nice guide for the pilot drill depth courtesy of:

    http://tapmatic.com/images/pdf/Drill%20Depth%20Clearance.pdf

    tap_clearance_ref.PNG

    H
    hsuryaprakash1-VisitorAuthor
    1-Visitor
    August 25, 2014

    Hi

    Still I have a doubt


    The M15x1.5 bolt penetrated into hole to 30 mm . The overall profile length is 30.5 mm.


    It become 30-50mm =20 mm remaining length


    So, out of the remaining above value what will be the hole thread length( blind hole) or clearance ? How to calculate ?

    It is an metric thread

    Capture.PNG

    T
    TomD.inPDX17-PeridotAnswer
    17-Peridot
    August 25, 2014

    3.75 is 2.5 * 1.5mm and the 1mm is for good measure (actually, it is part of the formula posted above)

    Please remember that you have to consider the type of thread tapping method you are using. 2.5 * pitch is for roll formed threads.

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