#10-24 x 1/2" ASTM F879 Hex Drive 18-8 Stainless Steel Button Socket Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.500 INCHES NOMINAL FASTENER LENGTH: 0.500 INCHES NOMINAL HEAD STYLE: C30 BUTTON HEAD DIAMETER: 0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM HEAD HEIGHT: 0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 0.190 INCHES WIDTH ACROSS FLATS: 0.125 INCHES NOMINAL THREAD QUANTITY PER INCH: 24 MATERIAL: STEEL CORROSION RESISTING OVERALL THREAD SERIES DESIGNATOR: UNC