There are some out of the box bolts available (detail components) that you can start with and do a saveas into your custom content folder then modify as needed.
This is the default location: C:\ProgramData\Autodesk\RVT 2017\Libraries\US Imperial\Detail Items\Div 05-Metals\050500-Common Work Results for Metals\050523-Metal Fastenings
There are also some modeled connections here: C:\ProgramData\Autodesk\RVT 2017\Libraries\US Imperial\Structural Connections\Steel
If you don't need to model it and just want to show this for detailing in your project you can either draw the information or insert or link the dwg file into a drafting view in your model project.
