1/2"-13 x 2-1/2" Grade 8 Plain Finish Hex Cap Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 2.500 INCHES NOMINAL HEAD STYLE: C1 HEXAGON WIDTH BETWEEN FLATS: 0.750 INCHES NOMINAL NOMINAL THREAD DIAMETER: 0.500 INCHES THREAD QUANTITY PER INCH: 13 MINIMUM TENSILE STRENGTH: 150000 POUNDS PER SQUARE INCH PART NAME ASSIGNED BY CONTROLLING AGENCY: 1/2 INCH -13 X 2-1/2 PLAIN FINISH SAE J429 GRADE 8 HEX CAP SCREW MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC