5/16"-24 Zinc Finish Grade 5 Finished Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.266 INCHES NOMINAL END ITEM IDENTIFICATION: F-15SA WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL THREAD SERIES: UNF THREAD QUANTITY PER INCH: 24 NOMINAL THREAD SIZE: 0.312 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: ZINC FINISHED GRD 5 HEX NUT MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL