Fahnestock clip

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A Fahnestock clip is an early technology for a mechanical electrical terminal. It consists of a single piece of flexible metal with a rectangle punched out of one end and a loop punched out of the other. The clip is bent over itself so the loop can be pushed through the rectangular opening. A wire can be inserted through the loop that is through the cut out, and the spring force of the clip pulling up makes an electrically sound mechanical connection.

Fahnestock clips were commonly made of phosphor bronze or spring steel and plated with tin for good electrical conductivity and corrosion-resistance.

Fahnestock clips were seen on early radio receiver breadboard construction, model train power connections, and the like. Today, they have largely been supplanted by binding posts.

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