1/2"-13 x 1" Grade 9 Holo-Krome® ECOGUARD® Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.000 INCHES NOMINAL FASTENER LENGTH: 1.000 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.364 INCHES MINIMUM AND 0.386 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM END ITEM IDENTIFICATION: 2590-01-626-2713 NOMINAL THREAD DIAMETER: 0.500 INCHES THREAD QUANTITY PER INCH: 13 PART NAME ASSIGNED BY CONTROLLING AGENCY: CAPSCREW, HEX HEAD SPECIAL FEATURES: ECOGUARD FINISH AND MATERIAL GRADE 9 MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC