Is QC30 the same as NMTB 30

This Bridgeport Interact 2 mill comes with "QC 30" toolholders. Is that the same as NMTB 30, as far as mounting goes?
thanks
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No
Otherwise the holders would be identified as being "NBTB 30" instead of QC 30
That said, some nmtb holders may fit up okay depending on who it was made them and when....
Recalling there being outer nut with a pair of inner tangs on the qc series--and if the flange is too thick or thin then its just not gonna work.
Anyhow, below is a couple of links that might apply :
http://www.tools-n-gizmos.com/specs/Tapers.html
http://www.topix.com/forum/city/hoquiam-wa/T0F2HBTB421SFEE7K/p3
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