faucet
I'm trying to remove my kitchen faucet, and have not been able to get this nut to budge with any of locking pliers, pb blaster penetrating oil, and a basin wrench. After looking more closely at it, I noticed this "sleeve" or cover of the threads of the screw the nut is on, which is different from what I've seen in the guides I've been referencing.
I'm wondering what this piece is and if it may be preventing me from loosening the nut.
Anti-Seize Lubricating Compound
Make sure it's waterproof
Make sure it's Anti-seize
I do not specifically recommend nor endorse either product, they are only used as examples.
The next step secret to getting more of this faucet apart are the two slots cut across the cupped part. See the arrows in the following picture.
It looks to me as that the cupped part is threaded down inside the larger diameter part that sticks up from the hole in the sink. There is probably a special tool used to engage these slots to thread the part out. It may be possible to lay a piece of metal bar stock across these slots as a tool. If you do that make sure that it has nice square corners.
Best Answer
That piece is a threaded sleeve nut that is actually holding the faucet in place. the nut at the top just holds the bracket in place while the sleeve nut is tightened or loosened with a large slotted screwdriver. Support the bracket with an adjustable wrench while turning the sleeve nut counterclockwise with slotted screwdriver to remove the faucet.