On Mar 26, 6:59 pm, " wrote:
On Mar 26, 5:48?pm, "Joe" wrote:

On Mar 26, 4:09 pm, Ron Hardin wrote:

What's the slightly white stuff on the threads of garden faucets,
and the kitchen faucet aerator screw for that matter, that prevents
screwing anything on? ?Calcium deposit?

Yes

How do you get it off? ?Vinegar?

Not aggressive enough. Try CLR, other calcium solubilizers, or
automotive radiator flush (oxalic acid crystals).

Joe

muratic acid will also work.

Caution! Muriatic acid (HCl) will dissolve the zinc out of the brass
faucet alloy. Use good judgement handling such strong acids.

Joe