3/8"-16 x 2-1/2" ASTM F593 18-8 Stainless Steel Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.000 INCHES NOMINAL FASTENER LENGTH: 2.500 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM NOMINAL THREAD DIAMETER: 0.375 INCHES THREAD QUANTITY PER INCH: 16 MATERIAL: STEEL CORROSION RESISTING OVERALL THREAD SERIES DESIGNATOR: UNC