Nut lock

a device, as a metal plate bent up at the corners, to prevent a nut from becoming unscrewed, as by jarring.

See also: Nut

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
He added: "We're warning drivers to make sure cars are locked up properly, wheel nut locks are used and any property attractive to thieves is removed." Thieves stole golf clubs, a golf bag and golfing trolley from a Fiesta parked in Arthur Davies Court, Barry, Sunday and Monday.
Fiesta owners given a warning
A single hydraulic cylinder drives the nut locks that fix the moving platens to the tiebars.
Injection molding
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