How do you remove rusted metal screws?

Answer 1

Any hardware store sells a chemical compound in a little bottle called "Liquid Wrench". Thoroughly soak the nut in that, come back 20 minutes later and thoroughly soak it again. Give it ten more minutes, and attempt to remove it. It isn't fail-safe, but it works the great majority of the time.

Answer 2

Here are four simple steps to try initially:

1) Clean up the seized fastener... use a combination of degreasers, detergents, abrasives and wire brushes. This sets things up for the next step...

2) Search for the term "penetrating lubricant". These are specially formulated to squeeze into the small spaces in fastener threads. Use the lubricant liberally. Use wire brushes to work it in, further cleansing the area.

3) Try to rock the fastener in both directions... particularly effective if it starts to come undone then jams. Add more lube as you go... it should rock a little further each time until it frees up. if not...

4) If seized absolutely solid try a freeze and release spray... very effective and much safer than heat around delicate electrics, heater hoses, brake lines etc.

Answer 3

With a long screwdriver. They are easily purchased.

Answer 4

Use a steel brush to scrape away the oxidation (rust) and then oil them to prevent further rusting.