kitchen-sinktools
I'm not sure what the name of this nut is, but it has come loose. I have a "basin wrench ratchet head" that goes on my socket set ratchet with a long arm but it can't get purchase because it is too bulky. I have had some success with my thin vise grips but it eventually comes loose again and the nut is starting to get scratched up from it all.
What is the correct tool for this job?
Looking at the diagram, I believe you want a basin wrench. It's designed exactly for these bolts in these tight conditions. And the next time you go to replace a sink, you'll be glad to already own one. That said, I've never heard of, nor seen a jaw dropper plumbing wrench, so I was hoping that someone with more plumbing experience would chime in.
For slotted collet nuts I use either an adjustable or slotted spanner wrench.
Best Answer
You should be able to get plenty of leverage on it with either a channel-lock pliers or an adjustable (Crescent) wrench. Both give you parallel jaws, which are key to keeping them on the nut.