Questions tagged [banjo-bolts]

A bolt that has a hollow passage in the middle that allows fluid to flow through. On vehicles these are commonly found in fuel and transmission fluid pipe connections.

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Why are copper washers required on banjo fittings?

Why are copper washers required on banjo fittings? Why do they need to be replaced each time you remove/loosen the banjo fitting? I'm assuming that copper is a softer metal than bronze, brass or ...