sketch a circle on the end of the rod... and then use the helix tool to make 
a thread path.
create a plane perp on the path at the end...and draw a profile... to cut 
sweep.

- also you can make a cosmetic thread rather than a modelled one. 

Thanks for your quick response.  How would I create a cosmetic thread?  I need the rod to be 7/16" threaded.  The Basic Major diameter needs to be .4375, the minor diameter actually needs to be .3780 instead w/20 TPI.  

sketch a circle on the end of the rod... and then use the helix tool to make 
a thread path.
create a plane perp on the path at the end...and draw a profile... to cut 
sweep.

- also you can make a cosmetic thread rather than a modelled one. 

Thanks for your quick response.  How would I create a cosmetic thread?  I need the rod to be 7/16" threaded.  The Basic Major diameter needs to be .4375, the minor diameter actually needs to be .3780 instead w/20 TPI.  

probably easiest just to type 'cosmetic thread' into your SW help search for 
info...

- another way to show threads is to simply make a busy representation of a 
thread using a revolved zigzag - this has the advantages of looking like a 
thread from a distance but cuts rebuild times over the sweep esp. if you 
have many of them.