The company claims that this "is a fast-acting penetrant with capillary action to penetrate deep into crevices, threads, and seams to break the rust bonds that hold stuck parts together." WD-40 ...

We may receive a commission on purchases made from links. Let's say you've got an old nut stuck completely flush to an equally old bolt. It's really screwed on there, to the point that neither ...

The WD-40 Specialist line — which includes the rust release penetrant spray, water-resistant silicone lubricant, protective white lithium grease, long-term corrosion inhibitor and rust remover ...

However, if the nut and bolt are very old and oxidation has taken its toll, WD-40 may not be able to get deep enough to loosen them. Penetrating ... up corrosion like rust, they help to dissolve ...