The 17-position count is the defining fit parameter — it is an odd number that matches specific circuit counts on a BOM, distinct from the more common 16- or 18-position headers in the same BERGSTIK family.
This unshrouded header mates with any standard 0.100" (2.54mm) pitch, 17-position female receptacle — typically a BERGSTIK socket strip or a crimp-housing assembly.