Are you a student?
I noticed that many (most?) of your sketches are not fully defined, not even dimensioned.
What version of Inventor is your school using?
It would be easier to help if you installed later release of the software as 2014 is rather ancient.
http://www.autodesk.com/edcommunity students, teachers and schools can all get the latest release at this site.
To make your life easier - the first thing I recommend is that you make use of obvious symmetry.
For example, in your handle.ipt change Extrusion1 to Symmetrical (midplane).
You could then Mate-Flush the XZ plane of the Bolt to the XY plane of the Handle to keep the handle centered in the bolt.
You will want to learn about Rotational/Translational constraint (screw motion) and Angle Constraints (Animate Constraint to impart motion).
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