A state charge say for nails (5)

I believe the answer is:

tacks

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'for nails' is the definition.
(tack is a kind of nail)

I don't understand how the rest of the clue works.

(Other definitions for tacks that I've seen before include "Small broad-headed nails" , "Short nails" , "Changes course" , "Approaches" , "a few points" .)

I've seen this clue in The Globe and Mail.

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