Step 1 – Gather The Necessary Tools
The tools that you will need for tightening a kitchen faucet is basin wrench (preferred) or a plier.
Using a basin wrench, you need to tighten the lock nuts beneath the sink one by one. If you have a two handle faucet, then you would have two lock nuts to tighten.
For single handed faucets, you typically have only one lock nut to tighten and it is located right in the center. You can see the supply lines coming through the nut. Again, a basin wrench is recommended to finish this job.