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Straightness (#2A)

(In accordance with the ASME Y14.5-2018 standard)
(In accordance with the ASME Y14.5-2009 standard)

PDF is Available with GD&T Reference Center Subscription.

There are two kinds of straightness tolerance – (1) Straightness of a derived median line [Y14.5-2009 Fig 5-2 and Y14.5-2018 Para 8.4.1.3] and (2) surface straightness [Y14.5-2009 Para 5.4.1.1 and Y14.5-2018 Para 8.4.1.2]. The type of straightness is determined by the placement of the feature control frame.

When the feature control frame is …

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Back to Tips Tip added Oct 2019