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Blemish on 3 million passivated woodscrews

We have about three million zinc plated and yellow passivate woodscrews in store exhibiting slight white/greyish discolouration in patches. Performance unaffected but unsightly and difficult to sell. Is there anything they can cheaply and easily be dipped in to hide this or am I stuck with the problem.

Terence ONeill
building contracts and supplies - Chippenham, Wiltshire, U.K.
2004

You've got some surface corrosion, possibly from damp storage. You'll have to strip and replate.

Jeffrey Holmes, CEF
Spartanburg, South Carolina
2004

Many thanks to Jeff Holmes, Spartanburg for his advice. Rectification underway.

Happy Xmas

Terry O'Neill

Terence ONeill
Building contracts & supplies - Chippenham, Wiltshire, U.K.
2004

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