Under what circumstances can EMT be threaded?

EMT (Electrical Metalic Tubing) commonly referred to as “thin wall conduit” is a lightweight steel tubing with wall thickness from 0.042″ for 1/2″ diameter to. 0.0883″ for 4″ diameter. It is too thin to be threaded so connectors must be used to join lengths together or terminate at a junction box.

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