9/16"-18 Grade 8 Hex Nut - Yellow Zinc Plated 9/16-18 grade 8 hex nut (fine) yellow zinc HN891618 $0.429/ea
5/16"-18 Grade 8 Hex Nut - Yellow Zinc Plated 5/16-18 grade 8 hex nut (coarse) yellow zinc HN851618 $0.063/ea