The correct search term would be Combo-D rather that Sub-D. That is what most people call the Sub-D variants which can accommodate High-current, HV or coaxial RF contacts in addition to normal 22D contacts. they are made (among others) by ITT Cannon, FCI (full range), but some Coax connector companies (like Pasternack) make only the contacts, while some Sub-D producers make the Combo-D bodies, but no RF contacts. But basically, Combo-D is Combo-D.
Enclosed you find the related pages from a older version of the Cannon MASB, which is a very handy guide for MilAero-connectors. they also give pointers to other, commercial documents therein.
I think those contacts do come under Mil-C-39029 or a related spec, but I have to dig the designation out.
Oh, here they are:
Bin codes 432/433/434/435 (but there could be more), Positioner for the small Mil-crimp tool (..) would be Daniels KS32-1 for the center contact, Insert/tool for the outer one (screen) is special (I might find more later)
Anyway, the civvie-spec contacts might use differen crimp styles and different tools. They are only required to be compatible with the applicable counterpart as used in the combo-D series (like the cheap stamped Sub-D contacts have to work with the machined ones).
Important: for making adaptors, there are additional parts that can be used. The coaxial 50
-inserts from other Mil-series (circular or rectangular) or the coax inserts from the VG-Leiste can be used, as it is only the FRONT GEOMETRY (where they mate) which concerns you. The retaining geometry, where the contact is held to the body is not of concern for most adaptors. So ask the surplus dealer of your choice.
For example, I have direct adaptors (to SMA), but I also have some which are made of the original contacts minus the retaining ring, so that I can access one or more Combo-D coax lines while maintaining the remainder of the connections. But in your case, the remainder does not exist, as only the coax contacts are there and no Combo-D shell.