From the course: Engineering Drawings for Manufacturing

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Dimensioning tips: Holes and slots

Dimensioning tips: Holes and slots

From the course: Engineering Drawings for Manufacturing

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Dimensioning tips: Holes and slots

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- [Instructor] When mechanical parts need to be attached to each other, parts are designed with holes to accept fasteners that produce secure and reliable joints. In this video, we'll show you how to dimension holes and slots clearly and concisely. To reduce the number of dimensions on the drawing, holes are usually dimensioned in a very concise note format. Special symbols are used to describe the different profiles and dimensions of the hole. This notation can be a bit cryptic at first, so let's look at some examples. Simple holes are dimensioned with their diameter and depth in the view where the hole appears as a circle. If the hole extends all the way through the part, you can replace the depth with the abbreviation for through. When holes are threaded, the nominal size, thread pitch and fit of the thread as specified in addition to the depth. Unless you have a specific reason for it, it's generally best not to dimension…

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