^ No that is not likely. Even HF themselves, have multiple factories making the same "looking" jack stands, is why they have the different simultaneous part #'s.
Take a good product, but clone it to a cheaper manufacturing cost, and that does not suggest that the cheaper clone came from the same factory.
However this is somewhat irrelevant. What factory they came out of is not always the problem. The problem is the specific defect, or for that matter, any other defect that any particular jack stand should be inspected to rule out.
You can buy a completely different design of jack stand and still have this possibility of a defect, and still need to exercise due dilligence to inspect them before trusting your life under a vehicle held up by one.
A pin in addition to the lever is not a bad idea, but do still inspect them. The pin only guards against pawl disengagement, not a few other failure modes.