1/2"-13 x 1" Zinc Finish Case Hardened Hex Serrated Flange Bolt / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 1.50 INCHES NOMINAL HEAD STYLE: C117 CHAMFER FLANGE END ITEM IDENTIFICATION: MRAP - UNIQUE NSN - MAXXPRO CAT I; 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 FLANGE MATERIAL: STEEL OVERALL PROPRIETARY CHARACTERISTICS: NPAC SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: UNC