First, you use Inventor to export the model as an SAT file.
Open Autodesk Inventor and export the part to SAT format:
If you don’t have Autodesk Inventor 2015 installed on your system, you can skip ahead to the next lesson, Import the Model into 3ds Max.
This model is of a small blade clamp mounted on a pin.
Inventor opens a Save Copy As dialog.
Inventor saves my_blade_clamp.sat in the same folder as blade_clamp.ipt.