1/4"-20 x 2" ASTM F879 Hex Drive Grade 18-8 Stainless Steel Flat Socket Cap Screw Full Thread / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 2.000 INCHES NOMINAL FASTENER LENGTH: 2.000 INCHES NOMINAL HEAD STYLE: C50 FLAT COUNTERSUNK HEAD DIAMETER: 0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 0.250 INCHES WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL THREAD QUANTITY PER INCH: 20 COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL MATERIAL: STEEL COMP 304 OVERALL THREAD SERIES DESIGNATOR: UNC