1/4"-20 x 2-1/2" Grade 8 Yellow Zinc Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.75 INCHES NOMINAL FASTENER LENGTH: 2.46 INCHES MINIMUM AND 2.50 INCHES MAXIMUM HEAD STYLE: A1 HEXAGON HEAD HEIGHT: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM INTERNAL DRIVE STYLE: B24 W/O INTERNAL DRIVE END ITEM IDENTIFICATION: 2320-01-532-3599 NOMINAL THREAD DIAMETER: 0.25 INCHES THREAD QUANTITY PER INCH: 20 MINIMUM TENSILE STRENGTH: 150000 POUNDS PER SQUARE INCH PART NAME ASSIGNED BY CONTROLLING AGENCY: 1/4-20X2.5, HEX CAP SCREWS, GRADE 8, YELLOW ZINC SCREW MATERIAL: STEEL SCREW MATERIAL DOCUMENT AND CLASSIFICATION: SAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE BEARING SURFACE OF HEAD SURFACE TREATMENT: ZINC HEAD SURFACE TREATMENT: ZINC SCREW SURFACE TREATMENT: ZINC SHANK SURFACE TREATMENT: ZINC BEARING SURFACE OF HEAD SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE HEAD SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE SHANK SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE COLOR: YELLOW THREAD SERIES DESIGNATOR: UNC