What is this joint on the driveshaft?

[East_Bound]

What's up guys -

Still trying to replace my U-Joints and carrier bearing. Tried to get my carrier bearing off and it isn't working too well. I think I stripped the threads on this part while trying to get the carrier bearing off. What is the name of this joint on the driveshaft with the thread that holds the carrier bearing in place? It might have to be replaced if the threads are damaged and it can't be re-threaded.

Also, what is a good way to get the carrier bearing off? I tried with a 3 piece puller, but it obviously did not go so well.

-Nick