GD&T Tip -Datum Reference Frame

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Hole and Slot as Datum Features - Part I (#256)

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

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A very robust method of locating a part in an assembly is to use a hole and slot as alignment features. A couple of bullet nosed bosses or fasteners may be used to mate with the hole and slot. These features often become the secondary and tertiary datum features as is illustrated here. I am often questioned regarding how to …

Back to Tips Tip added May 2011

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Hole and Slot as Datum Features - Part I (#256)

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

Your Source for GD&T Training
Based on The GD&T Hierarchy

Your Source for GD&T Software
and Computer Based Training

We offer On-Site Courses,
Public Seminars,
Webinars and Computer Based Training.