#8-32 x 5/8" ASTM F835 Hex Drive Black Oxide Finish Alloy Steel Button Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 0.625 INCHES NOMINAL HEAD STYLE: C30 BUTTON INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 6665-01-646-6922 NOMINAL THREAD DIAMETER: 0.164 INCHES WIDTH ACROSS FLATS: 0.094 INCHES NOMINAL THREAD QUANTITY PER INCH: 32 COLOR: BLACK OVERALL MATERIAL: ALUMINUM ALLOY OVERALL SURFACE TREATMENT: OXIDE OVERALL