Thought you might be interested...Find a copy of Raymond Roark, Formulas for Stress and Strain and it will supply you with the info on calculating that stress. A good materials handbook should provide the necessary material properties for the 316 and the safety factor for the recommended torque...
[b]I remember having a table of values of surface roughness or texture which may be expected based on the tolerance of a turned part. Does anyone have a table related to this subject?