Has anyone ever addressed a customer corrective action with no corrective action needed? Is this acceptable. I work for a distributor and our customer is rejecting one lot of parts because one nut failed torque test requirements. Lot size is 650 pcs. and they tested two nuts with one failing. Mfg. inspection reports shows 10 pcs. tested passed requirements. This is a large OEM so I do not want to piss them off but finding root cause of one nut non-conformance is difficult if not impossible.