1/4"-20 x 3/4" Grade 5 Zinc Finish Hex Cap Screw - Made in USA / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.72 INCHES MINIMUM AND 0.75 INCHES MAXIMUM FASTENER LENGTH: 0.72 INCHES MINIMUM AND 0.75 INCHES MAXIMUM 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 NOMINAL THREAD DIAMETER: 0.25 INCHES THREAD QUANTITY PER INCH: 20 MATERIAL: ZINC ALLOY OVERALL THREAD SERIES DESIGNATOR: UNC