1/2"-13 Yellow Zinc Finish Grade 8 Finished Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 11.1 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: MRAP - UNIQUE NSN - MAXXPRO CAT I; MAXXPRO DASH ISS W/CROWS AND W/OGPK WIDTH ACROSS FLATS: 19.0 MILLIMETERS NOMINAL THREAD SERIES: UNC PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT, 1/2-13 TYPE 8 MATERIAL: STEEL OVERALL PROPRIETARY CHARACTERISTICS: NPAC SURFACE TREATMENT: ZINC OVERALL