Look at mine if you like. Mine is 5/8" steel. Due to unusual dump geometry, mine is mounted to the dump body. I have very heavy duty dump hinges plus a 1-1/2" pin at front of body to hold front of body down. Hitch I just bought to freshen up my truck came from Weaver Distributing.
I also have a 3" receiver below the pintle for other trailers, also from Weaver. I assume they have a website, but I have a catalog. I usually call. Don't get the best informed employee first, but I always get a call back quickly.