1/2"-13 x 2" Phosphate and Oil Finish SAE J429 Grade 8 Hex Flange Bolt / THREAD CLASS: 2A HEAD STYLE: C7 HEXAGON EXTENDED WASHER END ITEM IDENTIFICATION: MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS; MAXXPRO DASH ISS W/CROWS AND W/OGPK NOMINAL THREAD DIAMETER: 0.500 INCHES THREAD QUANTITY PER INCH: 13 PART NAME ASSIGNED BY CONTROLLING AGENCY: BOLT, HEX FLANGED 1/2-13 X 2 SPECIAL FEATURES: BOLT,HEX FLANGED 1/2-13X2 PROPRIETARY CHARACTERISTICS: NPAC