Having procured a few 3/4-16 nuts from OSH (Thanks, Bruce!),
I've installed the HF hitch ball on my truck without issue.
I was 'way out on the handle of the knuckle-buster and gave
it a few really good reefs. The hardware tightened up and
stayed in place. It will be 'one with the truck' for a very
long time to come.
HF should buy OSH. They are a match made in Heaven.

--Winston--Now living happily ever after