</font><font color="blue" class="small">( Stump ... rather than make any stupid guesses, I'm wondering why you incorporated threaded bolts for the control arm connections?
Couldn't a pair of pins on each side do the job?  Seems it would have a disconnect time of about 15 seconds that way with no tools required?
Not a critique, just curious.
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What you are seeing is the threaded part of the pin... they are standard CAT 1 pins holding it to the tractor.  You will have to look closely at the picture, but you can see the snap ring pin holding it onto the arm in picture 2 on the left side... Many times pictures are posted in a way that we can't see all sides of the item and this is one of those times.... difficult to see the disconnect pins..  /forums/images/graemlins/smirk.gif