1/4"-20 x 5/8" Grade 8 Yellow Zinc Finish Hex Cap Screw - Made in USA / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.600 INCHES MINIMUM AND 0.625 INCHES MAXIMUM FASTENER LENGTH: 0.625 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM END ITEM IDENTIFICATION: 2320-01-531-2701 NOMINAL THREAD DIAMETER: 0.250 INCHES THREAD QUANTITY PER INCH: 20 MINIMUM TENSILE STRENGTH: 150000 POUNDS PER SQUARE INCH CHAMFER ANGLE: 15.0 DEGREES MINIMUM AND 30.0 DEGREES MAXIMUM PART NAME ASSIGNED BY CONTROLLING AGENCY: HEX CAP SCREW;1/4-20 X 5/8 YELLOW ZINC FINISH SAE J429 GRADE 8 HEX CAP SCREW MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: GR.8 STEEL IAW SAE J429 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ZE/FN 5C PER ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL THREAD SERIES DESIGNATOR: UNC