3/8"-16 x 3/4" Grade 9 Holo-Krome® ECOGUARD® Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.750 INCHES NOMINAL FASTENER LENGTH: 0.750 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.273 INCHES MINIMUM AND 0.289 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM END ITEM IDENTIFICATION: 2590-01-626-2713 NOMINAL THREAD DIAMETER: 0.375 INCHES THREAD QUANTITY PER INCH: 16 MINIMUM TENSILE STRENGTH: 180000 POUNDS PER SQUARE INCH HARDNESS RATING: 38.0 ROCKWELL C MINIMUM OVERALL AND 42.0 ROCKWELL C MAXIMUM PART NAME ASSIGNED BY CONTROLLING AGENCY: 3/8"-16X3/4" GRADE 9 FINISH HEX CAP SCREW COLOR: GRAY OVERALL OR SILVER MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: AISI 8637/8640/8740 MEDIUM CARBON ALLOY STEEL WIRE OR 4340 ALLOY STEEL BAR STOCK,GRADE 9 ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: SPECIAL ECOFINISH TO MEET 1000 HOURS OF SALT SPRAY CORROSION RESISTANCE MFR REF SINGLE TREATMENT RESPONSE OVERALL THREAD SERIES DESIGNATOR: UNC