Yes item:
233415808648
Slightly different in appearance on the stop.
Seems like the application listed for this part is overly wide; I've only seen the round lock pins in early Model A's and the tube axles.
Personally, I would drill the axle and use normal lock and king pins, since beside the round lock pins, you would also have to find king pins with a round notch.
I've been wanting to get one so I could have my machine shop guy replicate a bunch of them. Anyone care to be a donor? I'll get the original back to you and a new set.
Will need to address the lock pin issue if I decide to put my nos 37 tube axle to use, while I don't have any readily available king pins available to complete or check the fit I did remove a pair of 39 beam axle lock pins from a donor axle & they appear to fit perfectly, uncertain if in fact the same would be true with king pins in place.