Hole Wizard for M2.5x0.45 Flat Head MS

Is the hole wizard correct if trying to create a M2.5 CSK? The diameter is reading 0.217" however when I put an actual screw in the model (downloaded from McMaster), it looks too small. The head diameter of the screw is 0.185" which appears to be correct. Thoughts? Thanks.

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SolidworksModeling And Assemblies