Went through this looking for the same on 1610 chisel plow.

Cast implement tongue hitch designed for use with hammer strap hitch on a tractor.

I see you can get them with a bearing set up called a Bull Pull through Terog

http://blackaceparts.com/hitches.php

Also see non bearing types through CTD hitches.

http://www.thectdgroup.com/hitches.html

Wondering if the mounting bolt hole dimensions on the implement end are standard size /spacing or are different based on the category number ?

Ended up paying the piper at JD so I knew it would match up with holes on the machine.

Part number and dimensions is shown in the pics in this thread.

https://talk.newagtalk.com/forums/thread-view.asp?tid=730217

Couple other fellows mentioned having some they could get in this thread.

https://talk.newagtalk.com/forums/thread-view.asp?tid=705045