hook spanner

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Noun1.hook spanner - a wrench with a hook that fits over a nut or bolt head
spanner, wrench - a hand tool that is used to hold or twist a nut or bolt
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References in periodicals archive ?
Flip open the hook spanner and engage one of the coin-slotted notches to remove the offending tube.
A thin, square, jam nut, which tightened with a wrench and the opposed use of a hook spanner, secured the spring ends.