7/8"-9 x 1-3/4" Grade 5 Yellow Zinc Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.750 INCHES MAXIMUM FASTENER LENGTH: 1.750 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM WIDTH BETWEEN FLATS: 1.285 INCHES MINIMUM AND 1.312 INCHES MAXIMUM NOMINAL THREAD DIAMETER: 0.875 INCHES THREAD QUANTITY PER INCH: 9 MINIMUM TENSILE STRENGTH: 110000 POUNDS PER SQUARE INCH HARDNESS RATING: 22.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM MINIMUM YIELD STRENGTH: 78000 POUNDS PER SQUARE INCH MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: CADMIUM OVERALL AND CHROMATE SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL THREAD SERIES DESIGNATOR: UNC