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Calculation of bolt angle

  1. Sep 23, 2008 #1
    I have a flange of known thickness, with a bolt hole of a known diameter through it. I am trying to calculate the maximum angle off from the centerline through the bolt hole that the bolt will be able to pass ( I know the max diameter of the bolt as well ). Is there a formula for this, given that I know the flange thickness, bolt hole diameter, and bolt diameter? Thanks in advance.
  2. jcsd
  3. Sep 23, 2008 #2


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    I would just draw a picture.
    You have a striaght hole of known width and depth, a straight bolt of known width.
    The angle should come out easily - probably more easily than describing the question.
  4. Sep 23, 2008 #3
    Thanks. Yeah, as soon after I posted this, I drew it out and it became a lot clearer :)
  5. Sep 23, 2008 #4


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    Gold Member

    Yup, trig = friend :cool: Counter-sinks on the hole can also have a large effect on max angle, so you might look into that.
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