I think they're called "tine" pins. If they have a hole in one end for a hitch pin and a small flange or head on the other, that's them.

I'll second the request for more pix as work progresses.

Greg

: I went into this side project because of some annoying (but unavoidable)
: delays in deck stripping. Anyway I've got the wheels/pins and form ready
: to go. 3/16" strips of WRC (core) and Black Walnut (shell) are
: soaking in this makeshift PVC trough. I'll let them soak 24hrs and then
: fire up the (PVC) steamer if I have to.

: So the cart chassis will be two "U" shaped laminations that nest
: together when folded and open out into a "V" when it's time to
: roll. I copied this design from numerous posts, commercial models... looks
: like it's one of the more popular designs. I picked up the axle hardware
: at Lowes. I can't remember the name of those pins (bottom foreground of
: picture). It seems like Lowes has the best selection for loose hardware
: like this.