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Meaning of jack nut | Babel Free

Noun CEFR B2

Definitions

A type of nut with a sheet metal body that mushrooms outward, on the far side of the hole through the substrate, when the screw is screwed in, thus providing anchoring with only one-sided access to the hole. It is nearly equivalent to the female portion of a molly bolt.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

Jack o' the clock Jack O'Lantern Jack of all Trades jack of all trades, master of none jack of clubs jack of diamonds

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