5/8"-11 x 1-1/2" Grade 8 Yellow Zinc Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 1.420 INCHES MINIMUM AND 1.500 INCHES MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM WIDTH BETWEEN FLATS: 1.051 INCHES MINIMUM AND 1.083 INCHES MAXIMUM END ITEM IDENTIFICATION: MRAP-COUGAR NOMINAL THREAD DIAMETER: 0.625 INCHES THREAD QUANTITY PER INCH: 11 COLOR: YELLOW OVERALL MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: SAEJ429 ASSN STD ALL MATERIAL RESPONSES OVERALL PROPRIETARY CHARACTERISTICS: NPAC SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: UNC