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#19
09-22-2006, 08:24 PM
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Re: Zinc Phosphateing of Hood Hinges, Catches, etc
My bet is...the blue marks designated the sample piece and were marked after being pulled for quality control. Probably not found on every part...just some within the run. Typical in MFG...
 Are right and left marked? It would not make sense to check every part made......  Steve  
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