Pinochet said:
Is that just a set screw? Does it have to be brass and that same shape or can you use some screw from the hardware story that matches threads and length?
It is two different thread sizes. One goes in to the tub drain frame and the other goes in to the push down drain and this allows it to stay in place. I swear the only photo I can find of it is this crappy one from Amazon.
I've had to replace it before and I don't want to have to buy the whole kit every time. This time I will probably glue it in to the push down stopper.
Grok has given me like 4 different names for this part so that makes it even more complicated.