From the release PDF on M-Lok
Q:
I see the basic M-LOK slot dimensions are available on the web. Where are the
dimensions for the M-LOK T-Nut?
A:
The M-LOK T-Nut is currently under review by the US State Dept to determine its ITAR
classification. Until then, dimensioned drawings of the nut will be restricted to verified
US citizens, but are available free to all qualified recipients. Complete, finished T-Nuts
are also available for purchase directly from Magpul. For further details or to request
drawings please contact Drake Clark:
[email protected].
I tried looking some more but couldn't find the answer to your question. I think emailing Drake would be your best bet and be 100% accurate.