Not yet. Threads has announced fediverse Integration as "coming soon." When it does, you'll need to find an instance that federates with threads. Most of the fediverse seems to be losing their fucking minds over the thought of it right now, so you'll probably end up having to search for a while for a federated instance.
And for good reason. I don’t for a second believe that meta has good intentions for the fediverse. I would not be surprised if they’re trying an embrace, extend, extinguish play to control the fediverse.