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Toleranced Dimensions Still Have Their Place ll (#46)

(In accordance with the ASME Y14.5-2018 standard)
(In accordance with the ASME Y14.5-2009 standard)
(In accordance with Y14.5M-1994 standard)

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Last month’s Tip pointed out that even though basic dimensions are being used today far more than in the past, there are still many appropriate applications for toleranced dimensions. Care should be taken to only use toleranced dimensions in situations where they may be verified, reproducibly, without the possibility of misunderstanding. This generally limits their use to:

  • Tangent radii
  • Some steps or depths
  • Wall and material thickness
  • Features of size that contain opposed points

Use of the dimension origin symbol clarifies the meaning of the toleranced dimension.

Note that the "notes" on the drawings on this tip reference the ASME Y14.5-2018 standard. They could also reference ASME Y14.5M-1994 or ASME Y14.5-2009.

This tip is in accordance with ASME Y14.5M-1994, Y14.5-2009 and Y14.5-2018.
This tip was originally released in August 2001.

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Back to Tips Tip added Oct 2021