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What does the modelled diameter of a threaded hole say?
![bruce_fischer469](https://profiles.onshape.com/7c8b5604c689a9f624027b9a3c9777abee338717960a1c1e161f8447395bf5cf.png)
in General
Hi there,
I don't understand the meaning of the modelled diameter of threaded holes (see e.g. diameter of 2.571 mm for a M3 thread in the screenshot). It is not the standardized core diameter and I guess it was not chosen randomly. Therefore, I would like to ask what does it stand for.
Best regards
![Image: https://us.v-cdn.net/5022071/uploads/editor/e4/kx7puotsi4al.png](https://us.v-cdn.net/5022071/uploads/editor/e4/kx7puotsi4al.png)
I don't understand the meaning of the modelled diameter of threaded holes (see e.g. diameter of 2.571 mm for a M3 thread in the screenshot). It is not the standardized core diameter and I guess it was not chosen randomly. Therefore, I would like to ask what does it stand for.
Best regards
![Image: https://us.v-cdn.net/5022071/uploads/editor/e4/kx7puotsi4al.png](https://us.v-cdn.net/5022071/uploads/editor/e4/kx7puotsi4al.png)
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