Socket Set Screw, Cone, 1/2 in Overall Length, 1/2-13, Alloy Steel, Black Oxide, PK 50/ THREAD CLASS: 3A THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 0.500 INCHES NOMINAL HEAD STYLE: C101 HEADLESS (SETSCREW) POINT STYLE: F16 CONE INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 01-560-4409 NOMINAL THREAD DIAMETER: 0.500 INCHES WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL THREAD QUANTITY PER INCH: 13 MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL