Help with Contact type for stress analysis

[CAD-One]

I am analysing to see if the casting would break when we apply SIDE LOAD to the top of the pole.

The schematic shows the assembly parts; but i have simplified the simulation model to 2-part assembly.Set screws, helps to keep the parts concentric, Through bolt keeps the parts togeather.  With a 1/16 clearance, I am confused whatkind of contact to use? Automatic contacts uses a bonded method. I did not find suitable help online for this kind of application.Can any one explain what contact is applicable here ? 

[JDMather]

---

@CAD-One wrote:

I am analysing to see if the casting would break ...

---

Inventor doesn't do fracture analysis.

Limited to static linear analysis within the elastic deformation portion of the stress/strain curve.

Limited to relatively small displacements.

Fracture would be into the non-linear plastic deformation portion of the curve.

[CAD-One]

I should have said, I want to check the von mises stress to see if it goes past yeild stress value.

Due to the 1/16 clearance there is a slight hinging effect around the long connecting bolt. Because the rest of the contact types wont work for such large clearance, i just applied bonded contact and moved on.