Explore the Energy Glossary

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box

1. n. [Drilling]

A female threadform (internally threaded) for tubular goods and drillstring components.

See related terms: back off, break out, casing, casing string, mousehole, pin

Photograph of box and pin.

2. adj. [Drilling]

Relating to the female threadform, as in "box end of the pipe."

See related terms: pin