Seized up bottle screws

[AuntyRinum]

I have six, expensive to replace, galvanised bottle screws which are impossible to turn. They've been in the weather for years and won't turn on the threads.
Can anyone suggest something they can be soaked in to free them up?

 

[pvb]

Penetrating oil...

Wouldn't do any harm to try penetrating oil first for a few days.

 

[Sixpence]

Plus Gas is good stuff

 

[johnlilley]

Hi, if all else fails, heat will always succeed, quite a lot but not enough to damage the galvanising, if any movement is felt, reverse and backward & forward increasing the rotation ever so slightly each time with lubricant and it will eventually free off.
John Lilley

 

[savageseadog]

Boil in oil

 

[Oldhand]

Coke®?

 

[RobinBirch]

Scaffolders soak seized scaffold couplers in derv - may be worth a try?

 

[NealB]

I had exactly this problem..

a few years ago.

I soaked them in a bowl of diesel for a week or so, with, every few days, a test for the slightest sign of movement.

Then, patiently, backwards and forwards, and eventually they all moved easily.

 

[dickh]

Soak them in diesel for a couple of days then work them back & forth daily until they free up. Failing that, heat them up(after drying off the diesel!) When reassembled grease the threads well with Lanolin.