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  1. tcogswell

    Flatness in the absence of a GD&T callout.

    Thank you all. Extremely helpful.
  2. tcogswell

    Flatness in the absence of a GD&T callout.

    Belanger, The drawing calls out ANSI Y14.5M 1982. It is a cover that gets screwed down on all four sides. One would think even with a bow it would flatten being screwed down and all, but they did not stipulate a contrained condition.
  3. tcogswell

    Flatness in the absence of a GD&T callout.

    Thank you all for your input. Much appreciated
  4. tcogswell

    Flatness in the absence of a GD&T callout.

    I agree there should be a flatness called out, but there wasn't. I would like to know whether in the absence of said callout is there an implied one. If you measure the feature, in this case the thickness, it falls within the dimension and tolerance. The parts are being rejected for the bow...
  5. tcogswell

    Flatness in the absence of a GD&T callout.

    It is actually a piece of sheetmetal that is .125 thick and is called out as such. After the stamping out of the holes there is a bow in the part and no callout for flatness on the drawing. I am trying to figure out if it needs to go through a straightening operation to fall within the spec...
  6. tcogswell

    Flatness in the absence of a GD&T callout.

    I apologize if this has been answered in the past. I did see a post on concentricity but not flatness. I have a part that has a thickness with tolerance called out but no specific flatness called on on it. The part does have a bow in it but the thickness is good through out. Is there an...
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