The company itself has a list of over 2,000 uses for WD-40, which range from removing glue from leather surfaces and protecting shower grout from mildew to loosening stuck locks on parking meters ...

Traditional workshop logic dictates that a quick spritz of WD-40 will loosen things up and get that nut spinning again. This will usually suffice, as WD-40's well-documented lubricating prowess is ...