In the FeatureManager design tree, expand the pin component, select the Right plane, and open a sketch.
Select one of the long edges of the model, then click Convert
Entities 
on
the Sketch toolbar to create the sketch path for a sweep feature.
Exit the sketch.
Click Swept Boss/Base 
on the Features toolbar.
Use the circle (Sketch1) for Profile 
and the line
(Sketch2) for Path
, then click OK
to create the base feature of the pin as a sweep.
The status bar in the lower-right corner indicates that you are still editing the part.
