The older style end caps which use a bolt, washers, spring and a nut to connect to the tiller arms are the 60400010 (x2)
This kit has the aluminum end fitting which is adjustable for toe in. It uses a short bolt and a nut which is inside the tube. Both included. I'd guess that the part inside the tube is about 4" long.
The preferred connector kit is # 3052 (shown on page 21 / 2011 Spring catalog)
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