3/8"-16 Zinc Finish Grade A Finished Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.328 INCHES NOMINAL WIDTH ACROSS FLATS: 0.562 INCHES NOMINAL THREAD SERIES: UNC THREAD QUANTITY PER INCH: 16 NOMINAL THREAD SIZE: 0.375 INCHES BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL