# Kitchen faucet loose or wobbly: how to tighten it

Updated: 2026-10-24 · https://pros411.com/en/guides/plumbers/kitchen-faucet-loose

## Short answer

A wobbly kitchen faucet has a loose mounting nut under the sink. Empty the cabinet and find the nut with a flashlight, right under the faucet. Have someone hold the faucet straight from above. Snug the nut clockwise, as you look up at it, with a basin wrench or the tool that came with the faucet. Stop when it is firm: too much force can crack the sink or the counter.

## How to tighten a loose kitchen faucet

![Cartoon kitchen faucet wobbling loose on the sink](https://pros411.com/img/guias/kitchen-faucet-loose.webp)

1. **The faucet wobbles when you use it.** Every push of the lever loosens it a little more. If you leave it, the hoses underneath twist and can start to leak.
2. **Find the mounting nut with a flashlight.** Empty the cabinet and look up behind the sink, right under the faucet. The big nut or bracket on the threaded rod holds it down.
3. **Have someone hold the faucet straight.** From above, a helper keeps it centered and facing the right way while you work below.
4. **Snug the nut with a basin wrench.** Its long handle reaches up behind the sink. Turn clockwise, as you look up at the nut, until it is firm.
5. **Solid again.** Wiggle the faucet: it should not move. Run the water and check underneath for drips.

## If only the handle is loose

If the faucet is firm but the lever wiggles, the set screw in the handle is loose. Look for it under a small cap or at the back of the handle, and tighten it with an Allen key or a small screwdriver. If the handle still slips, the cartridge stem may be worn.

## What not to do

- Do not crank the nut as hard as you can. It can crack a porcelain sink or a stone counter.
- Do not twist the faucet to line it up after tightening. That twists the hoses underneath.
- Do not glue or caulk the base to stop the wobble. It comes loose again and traps water.

## When to call a plumber

- The nut is corroded or will not turn.
- The mounting hardware or the threaded rod is broken.
- Water leaks at the base of the faucet or under the sink after tightening.
- The faucet is firm at the base but wobbles from inside its body.

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## Frequently asked questions

### Why does my kitchen faucet keep getting loose?

Every pull on the lever works the mounting nut loose over time. A firm snug, with someone holding the faucet straight, fixes it for a long while.

### What tool do I need to tighten a kitchen faucet?

A basin wrench, a long tool made to reach the nut behind the sink. Many newer faucets come with a plastic wrench, or with a nut you can turn by hand or with a screwdriver.

### Do I need to turn off the water to tighten a faucet?

Not to tighten the mounting nut. Turn it off only if you need to disconnect the supply hoses or the faucet leaks.

### Which way do I turn the nut to tighten it?

Clockwise as you look up at it from under the sink. If you are not sure, give it a quarter turn and wiggle the faucet to check.

### Can a loose faucet cause a leak?

Yes. The constant movement strains the supply hoses and the seal at the base. Tighten it before water gets under the sink.