1/2"-20 Yellow Zinc Finish Grade 8 Finished Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.438 INCHES NOMINAL WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL THREAD SERIES: UNF THREAD QUANTITY PER INCH: 20 NOMINAL THREAD SIZE: 0.500 INCHES BEARING SURFACE TYPE: FLAT SPECIAL FEATURES: YELLOW ZINC FINISH GRADE 8 FINISHED HEX NUT MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL