Will this work on the moon?

No. The lack of oxygen will aggravate its exposure to UV, so the plastic coating will decay very quickly, at which point the metal will dissolve due to a weakening of intermolecular bonds from the low gravity. Also, the chrome on the lock will reflect the more intense sunlight into the inner workings of the lock and dry out the lubricant, so you won't be able to open it. Plus, since the moon has no local language, you will suddenly be unable to read the numbers on the dials in a subconscious attempt to fit in with local culture. If you're going to the moon, this won't cut it.
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